19760000

素因数分解:

$2^7\times 5^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1$

素因数の和:66

約数の個数: 160

約数和(自身を含む): 55763400

約数和(自身を除く): 36003400

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, 128, 130, 152, 160, 190, 200, 208, 247, 250, 260, 304, 320, 325, 380, 400, 416, 475, 494, 500, 520, 608, 625, 640, 650, 760, 800, 832, 950, 988, 1000, 1040, 1216, 1235, 1250, 1300, 1520, 1600, 1625, 1664, 1900, 1976, 2000, 2080, 2375, 2432, 2470, 2500, 2600, 3040, 3200, 3250, 3800, 3952, 4000, 4160, 4750, 4940, 5000, 5200, 6080, 6175, 6500, 7600, 7904, 8000, 8125, 8320, 9500, 9880, 10000, 10400, 11875, 12160, 12350, 13000, 15200, 15808, 16000, 16250, 19000, 19760, 20000, 20800, 23750, 24700, 26000, 30400, 30875, 31616, 32500, 38000, 39520, 40000, 41600, 47500, 49400, 52000, 60800, 61750, 65000, 76000, 79040, 80000, 95000, 98800, 104000, 123500, 130000, 152000, 154375, 158080, 190000, 197600, 208000, 247000, 260000, 304000, 308750, 380000, 395200, 494000, 520000, 617500, 760000, 790400, 988000, 1040000, 1235000, 1520000, 1976000, 2470000, 3952000, 4940000, 9880000, 19760000]

約数ペア:

[(1, 19760000), (2, 9880000), (4, 4940000), (5, 3952000), (8, 2470000), (10, 1976000), (13, 1520000), (16, 1235000), (19, 1040000), (20, 988000), (25, 790400), (26, 760000), (32, 617500), (38, 520000), (40, 494000), (50, 395200), (52, 380000), (64, 308750), (65, 304000), (76, 260000), (80, 247000), (95, 208000), (100, 197600), (104, 190000), (125, 158080), (128, 154375), (130, 152000), (152, 130000), (160, 123500), (190, 104000), (200, 98800), (208, 95000), (247, 80000), (250, 79040), (260, 76000), (304, 65000), (320, 61750), (325, 60800), (380, 52000), (400, 49400), (416, 47500), (475, 41600), (494, 40000), (500, 39520), (520, 38000), (608, 32500), (625, 31616), (640, 30875), (650, 30400), (760, 26000), (800, 24700), (832, 23750), (950, 20800), (988, 20000), (1000, 19760), (1040, 19000), (1216, 16250), (1235, 16000), (1250, 15808), (1300, 15200), (1520, 13000), (1600, 12350), (1625, 12160), (1664, 11875), (1900, 10400), (1976, 10000), (2000, 9880), (2080, 9500), (2375, 8320), (2432, 8125), (2470, 8000), (2500, 7904), (2600, 7600), (3040, 6500), (3200, 6175), (3250, 6080), (3800, 5200), (3952, 5000), (4000, 4940), (4160, 4750)]