40072720

素因数分解:

$2^4\times 5^1\times {\mathrm{500909}}^1$

素因数の和:500922

約数の個数: 20

約数和(自身を含む): 93169260

約数和(自身を除く): 53096540

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 500909, 1001818, 2003636, 2504545, 4007272, 5009090, 8014544, 10018180, 20036360, 40072720]

約数ペア:

[(1, 40072720), (2, 20036360), (4, 10018180), (5, 8014544), (8, 5009090), (10, 4007272), (16, 2504545), (20, 2003636), (40, 1001818), (80, 500909)]