20707080

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{4013}}^1$

素因数の和:4070

約数の個数: 64

約数和(自身を含む): 63581760

約数和(自身を除く): 42874680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 43, 60, 86, 120, 129, 172, 215, 258, 344, 430, 516, 645, 860, 1032, 1290, 1720, 2580, 4013, 5160, 8026, 12039, 16052, 20065, 24078, 32104, 40130, 48156, 60195, 80260, 96312, 120390, 160520, 172559, 240780, 345118, 481560, 517677, 690236, 862795, 1035354, 1380472, 1725590, 2070708, 2588385, 3451180, 4141416, 5176770, 6902360, 10353540, 20707080]

約数ペア:

[(1, 20707080), (2, 10353540), (3, 6902360), (4, 5176770), (5, 4141416), (6, 3451180), (8, 2588385), (10, 2070708), (12, 1725590), (15, 1380472), (20, 1035354), (24, 862795), (30, 690236), (40, 517677), (43, 481560), (60, 345118), (86, 240780), (120, 172559), (129, 160520), (172, 120390), (215, 96312), (258, 80260), (344, 60195), (430, 48156), (516, 40130), (645, 32104), (860, 24078), (1032, 20065), (1290, 16052), (1720, 12039), (2580, 8026), (4013, 5160)]