81370620

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{10513}}^1$

素因数の和:10571

約数の個数: 72

約数和(自身を含む): 252588336

約数和(自身を除く): 171217716

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2580, 3870, 7740, 10513, 21026, 31539, 42052, 52565, 63078, 94617, 105130, 126156, 157695, 189234, 210260, 315390, 378468, 452059, 473085, 630780, 904118, 946170, 1356177, 1808236, 1892340, 2260295, 2712354, 4068531, 4520590, 5424708, 6780885, 8137062, 9041180, 13561770, 16274124, 20342655, 27123540, 40685310, 81370620]

約数ペア:

[(1, 81370620), (2, 40685310), (3, 27123540), (4, 20342655), (5, 16274124), (6, 13561770), (9, 9041180), (10, 8137062), (12, 6780885), (15, 5424708), (18, 4520590), (20, 4068531), (30, 2712354), (36, 2260295), (43, 1892340), (45, 1808236), (60, 1356177), (86, 946170), (90, 904118), (129, 630780), (172, 473085), (180, 452059), (215, 378468), (258, 315390), (387, 210260), (430, 189234), (516, 157695), (645, 126156), (774, 105130), (860, 94617), (1290, 63078), (1548, 52565), (1935, 42052), (2580, 31539), (3870, 21026), (7740, 10513)]