21607288

素因数分解:

$2^3\times {\mathrm{71}}^1\times {\mathrm{109}}^1\times {\mathrm{349}}^1$

素因数の和:535

約数の個数: 32

約数和(自身を含む): 41580000

約数和(自身を除く): 19972712

約数列:

[1, 2, 4, 8, 71, 109, 142, 218, 284, 349, 436, 568, 698, 872, 1396, 2792, 7739, 15478, 24779, 30956, 38041, 49558, 61912, 76082, 99116, 152164, 198232, 304328, 2700911, 5401822, 10803644, 21607288]

約数ペア:

[(1, 21607288), (2, 10803644), (4, 5401822), (8, 2700911), (71, 304328), (109, 198232), (142, 152164), (218, 99116), (284, 76082), (349, 61912), (436, 49558), (568, 38041), (698, 30956), (872, 24779), (1396, 15478), (2792, 7739)]