87898820

素因数分解:

$2^2\times 5^1\times {\mathrm{491}}^1\times {\mathrm{8951}}^1$

素因数の和:9451

約数の個数: 24

約数和(自身を含む): 184984128

約数和(自身を除く): 97085308

約数列:

[1, 2, 4, 5, 10, 20, 491, 982, 1964, 2455, 4910, 8951, 9820, 17902, 35804, 44755, 89510, 179020, 4394941, 8789882, 17579764, 21974705, 43949410, 87898820]

約数ペア:

[(1, 87898820), (2, 43949410), (4, 21974705), (5, 17579764), (10, 8789882), (20, 4394941), (491, 179020), (982, 89510), (1964, 44755), (2455, 35804), (4910, 17902), (8951, 9820)]