21890152

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{2267}}^1$

素因数の和:2361

約数の個数: 32

約数和(自身を含む): 44089920

約数和(自身を除く): 22199768

約数列:

[1, 2, 4, 8, 17, 34, 68, 71, 136, 142, 284, 568, 1207, 2267, 2414, 4534, 4828, 9068, 9656, 18136, 38539, 77078, 154156, 160957, 308312, 321914, 643828, 1287656, 2736269, 5472538, 10945076, 21890152]

約数ペア:

[(1, 21890152), (2, 10945076), (4, 5472538), (8, 2736269), (17, 1287656), (34, 643828), (68, 321914), (71, 308312), (136, 160957), (142, 154156), (284, 77078), (568, 38539), (1207, 18136), (2267, 9656), (2414, 9068), (4534, 4828)]