21722872

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{211}}^1\times {\mathrm{757}}^1$

素因数の和:991

約数の個数: 32

約数和(自身を含む): 43387920

約数和(自身を除く): 21665048

約数列:

[1, 2, 4, 8, 17, 34, 68, 136, 211, 422, 757, 844, 1514, 1688, 3028, 3587, 6056, 7174, 12869, 14348, 25738, 28696, 51476, 102952, 159727, 319454, 638908, 1277816, 2715359, 5430718, 10861436, 21722872]

約数ペア:

[(1, 21722872), (2, 10861436), (4, 5430718), (8, 2715359), (17, 1277816), (34, 638908), (68, 319454), (136, 159727), (211, 102952), (422, 51476), (757, 28696), (844, 25738), (1514, 14348), (1688, 12869), (3028, 7174), (3587, 6056)]