85060840

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{491}}^1$

素因数の和:634

約数の個数: 64

約数和(自身を含む): 197665920

約数和(自身を除く): 112605080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 71, 122, 142, 244, 284, 305, 355, 488, 491, 568, 610, 710, 982, 1220, 1420, 1964, 2440, 2455, 2840, 3928, 4331, 4910, 8662, 9820, 17324, 19640, 21655, 29951, 34648, 34861, 43310, 59902, 69722, 86620, 119804, 139444, 149755, 173240, 174305, 239608, 278888, 299510, 348610, 599020, 697220, 1198040, 1394440, 2126521, 4253042, 8506084, 10632605, 17012168, 21265210, 42530420, 85060840]

約数ペア:

[(1, 85060840), (2, 42530420), (4, 21265210), (5, 17012168), (8, 10632605), (10, 8506084), (20, 4253042), (40, 2126521), (61, 1394440), (71, 1198040), (122, 697220), (142, 599020), (244, 348610), (284, 299510), (305, 278888), (355, 239608), (488, 174305), (491, 173240), (568, 149755), (610, 139444), (710, 119804), (982, 86620), (1220, 69722), (1420, 59902), (1964, 43310), (2440, 34861), (2455, 34648), (2840, 29951), (3928, 21655), (4331, 19640), (4910, 17324), (8662, 9820)]