21272168

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{2203}}^1$

素因数の和:2297

約数の個数: 32

約数和(自身を含む): 42845760

約数和(自身を除く): 21573592

約数列:

[1, 2, 4, 8, 17, 34, 68, 71, 136, 142, 284, 568, 1207, 2203, 2414, 4406, 4828, 8812, 9656, 17624, 37451, 74902, 149804, 156413, 299608, 312826, 625652, 1251304, 2659021, 5318042, 10636084, 21272168]

約数ペア:

[(1, 21272168), (2, 10636084), (4, 5318042), (8, 2659021), (17, 1251304), (34, 625652), (68, 312826), (71, 299608), (136, 156413), (142, 149804), (284, 74902), (568, 37451), (1207, 17624), (2203, 9656), (2414, 8812), (4406, 4828)]