21208072

素因数分解:

$2^3\times {\mathrm{821}}^1\times {\mathrm{3229}}^1$

素因数の和:4056

約数の個数: 16

約数和(自身を含む): 39825900

約数和(自身を除く): 18617828

約数列:

[1, 2, 4, 8, 821, 1642, 3229, 3284, 6458, 6568, 12916, 25832, 2651009, 5302018, 10604036, 21208072]

約数ペア:

[(1, 21208072), (2, 10604036), (4, 5302018), (8, 2651009), (821, 25832), (1642, 12916), (3229, 6568), (3284, 6458)]