21638528

素因数分解:

$2^7\times {\mathrm{71}}^1\times {\mathrm{2381}}^1$

素因数の和:2466

約数の個数: 32

約数和(自身を含む): 43733520

約数和(自身を除く): 22094992

約数列:

[1, 2, 4, 8, 16, 32, 64, 71, 128, 142, 284, 568, 1136, 2272, 2381, 4544, 4762, 9088, 9524, 19048, 38096, 76192, 152384, 169051, 304768, 338102, 676204, 1352408, 2704816, 5409632, 10819264, 21638528]

約数ペア:

[(1, 21638528), (2, 10819264), (4, 5409632), (8, 2704816), (16, 1352408), (32, 676204), (64, 338102), (71, 304768), (128, 169051), (142, 152384), (284, 76192), (568, 38096), (1136, 19048), (2272, 9524), (2381, 9088), (4544, 4762)]