31129825

素因数分解:

$5^2\times {\mathrm{61}}^1\times {\mathrm{137}}^1\times {\mathrm{149}}^1$

素因数の和:357

約数の個数: 24

約数和(自身を含む): 39785400

約数和(自身を除く): 8655575

約数列:

[1, 5, 25, 61, 137, 149, 305, 685, 745, 1525, 3425, 3725, 8357, 9089, 20413, 41785, 45445, 102065, 208925, 227225, 510325, 1245193, 6225965, 31129825]

約数ペア:

[(1, 31129825), (5, 6225965), (25, 1245193), (61, 510325), (137, 227225), (149, 208925), (305, 102065), (685, 45445), (745, 41785), (1525, 20413), (3425, 9089), (3725, 8357)]