20216950000

素因数分解:

$2^4\times 5^5\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{1637}}^1$

素因数の和:1702

約数の個数: 240

約数和(自身を含む): 55534883040

約数和(自身を除く): 35317933040

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 25, 26, 38, 40, 50, 52, 65, 76, 80, 95, 100, 104, 125, 130, 152, 190, 200, 208, 247, 250, 260, 304, 325, 380, 400, 475, 494, 500, 520, 625, 650, 760, 950, 988, 1000, 1040, 1235, 1250, 1300, 1520, 1625, 1637, 1900, 1976, 2000, 2375, 2470, 2500, 2600, 3125, 3250, 3274, 3800, 3952, 4750, 4940, 5000, 5200, 6175, 6250, 6500, 6548, 7600, 8125, 8185, 9500, 9880, 10000, 11875, 12350, 12500, 13000, 13096, 16250, 16370, 19000, 19760, 21281, 23750, 24700, 25000, 26000, 26192, 30875, 31103, 32500, 32740, 38000, 40625, 40925, 42562, 47500, 49400, 50000, 59375, 61750, 62206, 65000, 65480, 81250, 81850, 85124, 95000, 98800, 106405, 118750, 123500, 124412, 130000, 130960, 154375, 155515, 162500, 163700, 170248, 190000, 204625, 212810, 237500, 247000, 248824, 308750, 311030, 325000, 327400, 340496, 404339, 409250, 425620, 475000, 494000, 497648, 532025, 617500, 622060, 650000, 654800, 771875, 777575, 808678, 818500, 851240, 950000, 1023125, 1064050, 1235000, 1244120, 1543750, 1555150, 1617356, 1637000, 1702480, 2021695, 2046250, 2128100, 2470000, 2488240, 2660125, 3087500, 3110300, 3234712, 3274000, 3887875, 4043390, 4092500, 4256200, 5115625, 5320250, 6175000, 6220600, 6469424, 7775750, 8086780, 8185000, 8512400, 10108475, 10231250, 10640500, 12350000, 12441200, 13300625, 15551500, 16173560, 16370000, 19439375, 20216950, 20462500, 21281000, 26601250, 31103000, 32347120, 38878750, 40433900, 40925000, 42562000, 50542375, 53202500, 62206000, 66503125, 77757500, 80867800, 81850000, 97196875, 101084750, 106405000, 133006250, 155515000, 161735600, 194393750, 202169500, 212810000, 252711875, 266012500, 311030000, 388787500, 404339000, 505423750, 532025000, 777575000, 808678000, 1010847500, 1064050000, 1263559375, 1555150000, 2021695000, 2527118750, 4043390000, 5054237500, 10108475000, 20216950000]

約数ペア:

[(1, 20216950000), (2, 10108475000), (4, 5054237500), (5, 4043390000), (8, 2527118750), (10, 2021695000), (13, 1555150000), (16, 1263559375), (19, 1064050000), (20, 1010847500), (25, 808678000), (26, 777575000), (38, 532025000), (40, 505423750), (50, 404339000), (52, 388787500), (65, 311030000), (76, 266012500), (80, 252711875), (95, 212810000), (100, 202169500), (104, 194393750), (125, 161735600), (130, 155515000), (152, 133006250), (190, 106405000), (200, 101084750), (208, 97196875), (247, 81850000), (250, 80867800), (260, 77757500), (304, 66503125), (325, 62206000), (380, 53202500), (400, 50542375), (475, 42562000), (494, 40925000), (500, 40433900), (520, 38878750), (625, 32347120), (650, 31103000), (760, 26601250), (950, 21281000), (988, 20462500), (1000, 20216950), (1040, 19439375), (1235, 16370000), (1250, 16173560), (1300, 15551500), (1520, 13300625), (1625, 12441200), (1637, 12350000), (1900, 10640500), (1976, 10231250), (2000, 10108475), (2375, 8512400), (2470, 8185000), (2500, 8086780), (2600, 7775750), (3125, 6469424), (3250, 6220600), (3274, 6175000), (3800, 5320250), (3952, 5115625), (4750, 4256200), (4940, 4092500), (5000, 4043390), (5200, 3887875), (6175, 3274000), (6250, 3234712), (6500, 3110300), (6548, 3087500), (7600, 2660125), (8125, 2488240), (8185, 2470000), (9500, 2128100), (9880, 2046250), (10000, 2021695), (11875, 1702480), (12350, 1637000), (12500, 1617356), (13000, 1555150), (13096, 1543750), (16250, 1244120), (16370, 1235000), (19000, 1064050), (19760, 1023125), (21281, 950000), (23750, 851240), (24700, 818500), (25000, 808678), (26000, 777575), (26192, 771875), (30875, 654800), (31103, 650000), (32500, 622060), (32740, 617500), (38000, 532025), (40625, 497648), (40925, 494000), (42562, 475000), (47500, 425620), (49400, 409250), (50000, 404339), (59375, 340496), (61750, 327400), (62206, 325000), (65000, 311030), (65480, 308750), (81250, 248824), (81850, 247000), (85124, 237500), (95000, 212810), (98800, 204625), (106405, 190000), (118750, 170248), (123500, 163700), (124412, 162500), (130000, 155515), (130960, 154375)]