31539280

素因数分解:

$2^4\times 5^1\times {\mathrm{394241}}^1$

素因数の和:394254

約数の個数: 20

約数和(自身を含む): 73329012

約数和(自身を除く): 41789732

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 394241, 788482, 1576964, 1971205, 3153928, 3942410, 6307856, 7884820, 15769640, 31539280]

約数ペア:

[(1, 31539280), (2, 15769640), (4, 7884820), (5, 6307856), (8, 3942410), (10, 3153928), (16, 1971205), (20, 1576964), (40, 788482), (80, 394241)]