21628510

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{271}}^1\times {\mathrm{347}}^1$

素因数の和:648

約数の個数: 32

約数和(自身を含む): 40891392

約数和(自身を除く): 19262882

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 271, 347, 542, 694, 1355, 1735, 2710, 3470, 6233, 7981, 12466, 15962, 31165, 39905, 62330, 79810, 94037, 188074, 470185, 940370, 2162851, 4325702, 10814255, 21628510]

約数ペア:

[(1, 21628510), (2, 10814255), (5, 4325702), (10, 2162851), (23, 940370), (46, 470185), (115, 188074), (230, 94037), (271, 79810), (347, 62330), (542, 39905), (694, 31165), (1355, 15962), (1735, 12466), (2710, 7981), (3470, 6233)]