20907535

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{59}}^1\times {\mathrm{379}}^1$

素因数の和:471

約数の個数: 32

約数和(自身を含む): 29548800

約数和(自身を除く): 8641265

約数列:

[1, 5, 11, 17, 55, 59, 85, 187, 295, 379, 649, 935, 1003, 1895, 3245, 4169, 5015, 6443, 11033, 20845, 22361, 32215, 55165, 70873, 111805, 245971, 354365, 380137, 1229855, 1900685, 4181507, 20907535]

約数ペア:

[(1, 20907535), (5, 4181507), (11, 1900685), (17, 1229855), (55, 380137), (59, 354365), (85, 245971), (187, 111805), (295, 70873), (379, 55165), (649, 32215), (935, 22361), (1003, 20845), (1895, 11033), (3245, 6443), (4169, 5015)]