51349360

素因数分解:

$2^4\times 5^1\times {\mathrm{641867}}^1$

素因数の和:641880

約数の個数: 20

約数和(自身を含む): 119387448

約数和(自身を除く): 68038088

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 641867, 1283734, 2567468, 3209335, 5134936, 6418670, 10269872, 12837340, 25674680, 51349360]

約数ペア:

[(1, 51349360), (2, 25674680), (4, 12837340), (5, 10269872), (8, 6418670), (10, 5134936), (16, 3209335), (20, 2567468), (40, 1283734), (80, 641867)]