12641905

素因数分解:

$5^1\times {\mathrm{71}}^1\times {\mathrm{149}}^1\times {\mathrm{239}}^1$

素因数の和:464

約数の個数: 16

約数和(自身を含む): 15552000

約数和(自身を除く): 2910095

約数列:

[1, 5, 71, 149, 239, 355, 745, 1195, 10579, 16969, 35611, 52895, 84845, 178055, 2528381, 12641905]

約数ペア:

[(1, 12641905), (5, 2528381), (71, 178055), (149, 84845), (239, 52895), (355, 35611), (745, 16969), (1195, 10579)]