21931645

素因数分解:

$5^1\times {\mathrm{101}}^1\times {\mathrm{137}}^1\times {\mathrm{317}}^1$

素因数の和:560

約数の個数: 16

約数和(自身を含む): 26857008

約数和(自身を除く): 4925363

約数列:

[1, 5, 101, 137, 317, 505, 685, 1585, 13837, 32017, 43429, 69185, 160085, 217145, 4386329, 21931645]

約数ペア:

[(1, 21931645), (5, 4386329), (101, 217145), (137, 160085), (317, 69185), (505, 43429), (685, 32017), (1585, 13837)]