21227776

素因数分解:

$2^8\times {\mathrm{101}}^1\times {\mathrm{821}}^1$

素因数の和:938

約数の個数: 36

約数和(自身を含む): 42844284

約数和(自身を除く): 21616508

約数列:

[1, 2, 4, 8, 16, 32, 64, 101, 128, 202, 256, 404, 808, 821, 1616, 1642, 3232, 3284, 6464, 6568, 12928, 13136, 25856, 26272, 52544, 82921, 105088, 165842, 210176, 331684, 663368, 1326736, 2653472, 5306944, 10613888, 21227776]

約数ペア:

[(1, 21227776), (2, 10613888), (4, 5306944), (8, 2653472), (16, 1326736), (32, 663368), (64, 331684), (101, 210176), (128, 165842), (202, 105088), (256, 82921), (404, 52544), (808, 26272), (821, 25856), (1616, 13136), (1642, 12928), (3232, 6568), (3284, 6464)]