71981890

素因数分解:

$2^1\times 5^1\times {\mathrm{181}}^1\times {\mathrm{39769}}^1$

素因数の和:39957

約数の個数: 16

約数和(自身を含む): 130286520

約数和(自身を除く): 58304630

約数列:

[1, 2, 5, 10, 181, 362, 905, 1810, 39769, 79538, 198845, 397690, 7198189, 14396378, 35990945, 71981890]

約数ペア:

[(1, 71981890), (2, 35990945), (5, 14396378), (10, 7198189), (181, 397690), (362, 198845), (905, 79538), (1810, 39769)]