21365888

素因数分解:

$2^7\times {\mathrm{71}}^1\times {\mathrm{2351}}^1$

素因数の和:2436

約数の個数: 32

約数和(自身を含む): 43182720

約数和(自身を除く): 21816832

約数列:

[1, 2, 4, 8, 16, 32, 64, 71, 128, 142, 284, 568, 1136, 2272, 2351, 4544, 4702, 9088, 9404, 18808, 37616, 75232, 150464, 166921, 300928, 333842, 667684, 1335368, 2670736, 5341472, 10682944, 21365888]

約数ペア:

[(1, 21365888), (2, 10682944), (4, 5341472), (8, 2670736), (16, 1335368), (32, 667684), (64, 333842), (71, 300928), (128, 166921), (142, 150464), (284, 75232), (568, 37616), (1136, 18808), (2272, 9404), (2351, 9088), (4544, 4702)]