12720500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1$

素因数の和:154

約数の個数: 96

約数和(自身を含む): 31799040

約数和(自身を除く): 19078540

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 25, 26, 38, 50, 52, 65, 76, 95, 100, 103, 125, 130, 190, 206, 247, 250, 260, 325, 380, 412, 475, 494, 500, 515, 650, 950, 988, 1030, 1235, 1300, 1339, 1625, 1900, 1957, 2060, 2375, 2470, 2575, 2678, 3250, 3914, 4750, 4940, 5150, 5356, 6175, 6500, 6695, 7828, 9500, 9785, 10300, 12350, 12875, 13390, 19570, 24700, 25441, 25750, 26780, 30875, 33475, 39140, 48925, 50882, 51500, 61750, 66950, 97850, 101764, 123500, 127205, 133900, 167375, 195700, 244625, 254410, 334750, 489250, 508820, 636025, 669500, 978500, 1272050, 2544100, 3180125, 6360250, 12720500]

約数ペア:

[(1, 12720500), (2, 6360250), (4, 3180125), (5, 2544100), (10, 1272050), (13, 978500), (19, 669500), (20, 636025), (25, 508820), (26, 489250), (38, 334750), (50, 254410), (52, 244625), (65, 195700), (76, 167375), (95, 133900), (100, 127205), (103, 123500), (125, 101764), (130, 97850), (190, 66950), (206, 61750), (247, 51500), (250, 50882), (260, 48925), (325, 39140), (380, 33475), (412, 30875), (475, 26780), (494, 25750), (500, 25441), (515, 24700), (650, 19570), (950, 13390), (988, 12875), (1030, 12350), (1235, 10300), (1300, 9785), (1339, 9500), (1625, 7828), (1900, 6695), (1957, 6500), (2060, 6175), (2375, 5356), (2470, 5150), (2575, 4940), (2678, 4750), (3250, 3914)]