20962500

素因数分解:

$2^2\times 3^1\times 5^5\times {\mathrm{13}}^1\times {\mathrm{43}}^1$

素因数の和:88

約数の個数: 144

約数和(自身を含む): 67370688

約数和(自身を除く): 46408188

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 25, 26, 30, 39, 43, 50, 52, 60, 65, 75, 78, 86, 100, 125, 129, 130, 150, 156, 172, 195, 215, 250, 258, 260, 300, 325, 375, 390, 430, 500, 516, 559, 625, 645, 650, 750, 780, 860, 975, 1075, 1118, 1250, 1290, 1300, 1500, 1625, 1677, 1875, 1950, 2150, 2236, 2500, 2580, 2795, 3125, 3225, 3250, 3354, 3750, 3900, 4300, 4875, 5375, 5590, 6250, 6450, 6500, 6708, 7500, 8125, 8385, 9375, 9750, 10750, 11180, 12500, 12900, 13975, 16125, 16250, 16770, 18750, 19500, 21500, 24375, 26875, 27950, 32250, 32500, 33540, 37500, 40625, 41925, 48750, 53750, 55900, 64500, 69875, 80625, 81250, 83850, 97500, 107500, 121875, 134375, 139750, 161250, 162500, 167700, 209625, 243750, 268750, 279500, 322500, 349375, 403125, 419250, 487500, 537500, 698750, 806250, 838500, 1048125, 1397500, 1612500, 1746875, 2096250, 3493750, 4192500, 5240625, 6987500, 10481250, 20962500]

約数ペア:

[(1, 20962500), (2, 10481250), (3, 6987500), (4, 5240625), (5, 4192500), (6, 3493750), (10, 2096250), (12, 1746875), (13, 1612500), (15, 1397500), (20, 1048125), (25, 838500), (26, 806250), (30, 698750), (39, 537500), (43, 487500), (50, 419250), (52, 403125), (60, 349375), (65, 322500), (75, 279500), (78, 268750), (86, 243750), (100, 209625), (125, 167700), (129, 162500), (130, 161250), (150, 139750), (156, 134375), (172, 121875), (195, 107500), (215, 97500), (250, 83850), (258, 81250), (260, 80625), (300, 69875), (325, 64500), (375, 55900), (390, 53750), (430, 48750), (500, 41925), (516, 40625), (559, 37500), (625, 33540), (645, 32500), (650, 32250), (750, 27950), (780, 26875), (860, 24375), (975, 21500), (1075, 19500), (1118, 18750), (1250, 16770), (1290, 16250), (1300, 16125), (1500, 13975), (1625, 12900), (1677, 12500), (1875, 11180), (1950, 10750), (2150, 9750), (2236, 9375), (2500, 8385), (2580, 8125), (2795, 7500), (3125, 6708), (3225, 6500), (3250, 6450), (3354, 6250), (3750, 5590), (3900, 5375), (4300, 4875)]