20912512

素因数分解:

$2^7\times {\mathrm{199}}^1\times {\mathrm{821}}^1$

素因数の和:1034

約数の個数: 32

約数和(自身を含む): 41922000

約数和(自身を除く): 21009488

約数列:

[1, 2, 4, 8, 16, 32, 64, 128, 199, 398, 796, 821, 1592, 1642, 3184, 3284, 6368, 6568, 12736, 13136, 25472, 26272, 52544, 105088, 163379, 326758, 653516, 1307032, 2614064, 5228128, 10456256, 20912512]

約数ペア:

[(1, 20912512), (2, 10456256), (4, 5228128), (8, 2614064), (16, 1307032), (32, 653516), (64, 326758), (128, 163379), (199, 105088), (398, 52544), (796, 26272), (821, 25472), (1592, 13136), (1642, 12736), (3184, 6568), (3284, 6368)]