9880000

素因数分解:

$2^6\times 5^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1$

素因数の和:64

約数の個数: 140

約数和(自身を含む): 27772360

約数和(自身を除く): 17892360

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 19, 20, 25, 26, 32, 38, 40, 50, 52, 64, 65, 76, 80, 95, 100, 104, 125, 130, 152, 160, 190, 200, 208, 247, 250, 260, 304, 320, 325, 380, 400, 416, 475, 494, 500, 520, 608, 625, 650, 760, 800, 832, 950, 988, 1000, 1040, 1216, 1235, 1250, 1300, 1520, 1600, 1625, 1900, 1976, 2000, 2080, 2375, 2470, 2500, 2600, 3040, 3250, 3800, 3952, 4000, 4160, 4750, 4940, 5000, 5200, 6080, 6175, 6500, 7600, 7904, 8000, 8125, 9500, 9880, 10000, 10400, 11875, 12350, 13000, 15200, 15808, 16250, 19000, 19760, 20000, 20800, 23750, 24700, 26000, 30400, 30875, 32500, 38000, 39520, 40000, 47500, 49400, 52000, 61750, 65000, 76000, 79040, 95000, 98800, 104000, 123500, 130000, 152000, 154375, 190000, 197600, 247000, 260000, 308750, 380000, 395200, 494000, 520000, 617500, 760000, 988000, 1235000, 1976000, 2470000, 4940000, 9880000]

約数ペア:

[(1, 9880000), (2, 4940000), (4, 2470000), (5, 1976000), (8, 1235000), (10, 988000), (13, 760000), (16, 617500), (19, 520000), (20, 494000), (25, 395200), (26, 380000), (32, 308750), (38, 260000), (40, 247000), (50, 197600), (52, 190000), (64, 154375), (65, 152000), (76, 130000), (80, 123500), (95, 104000), (100, 98800), (104, 95000), (125, 79040), (130, 76000), (152, 65000), (160, 61750), (190, 52000), (200, 49400), (208, 47500), (247, 40000), (250, 39520), (260, 38000), (304, 32500), (320, 30875), (325, 30400), (380, 26000), (400, 24700), (416, 23750), (475, 20800), (494, 20000), (500, 19760), (520, 19000), (608, 16250), (625, 15808), (650, 15200), (760, 13000), (800, 12350), (832, 11875), (950, 10400), (988, 10000), (1000, 9880), (1040, 9500), (1216, 8125), (1235, 8000), (1250, 7904), (1300, 7600), (1520, 6500), (1600, 6175), (1625, 6080), (1900, 5200), (1976, 5000), (2000, 4940), (2080, 4750), (2375, 4160), (2470, 4000), (2500, 3952), (2600, 3800), (3040, 3250)]