20956640

素因数分解:

$2^5\times 5^1\times {\mathrm{227}}^1\times {\mathrm{577}}^1$

素因数の和:819

約数の個数: 48

約数和(自身を含む): 49814352

約数和(自身を除く): 28857712

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 227, 454, 577, 908, 1135, 1154, 1816, 2270, 2308, 2885, 3632, 4540, 4616, 5770, 7264, 9080, 9232, 11540, 18160, 18464, 23080, 36320, 46160, 92320, 130979, 261958, 523916, 654895, 1047832, 1309790, 2095664, 2619580, 4191328, 5239160, 10478320, 20956640]

約数ペア:

[(1, 20956640), (2, 10478320), (4, 5239160), (5, 4191328), (8, 2619580), (10, 2095664), (16, 1309790), (20, 1047832), (32, 654895), (40, 523916), (80, 261958), (160, 130979), (227, 92320), (454, 46160), (577, 36320), (908, 23080), (1135, 18464), (1154, 18160), (1816, 11540), (2270, 9232), (2308, 9080), (2885, 7264), (3632, 5770), (4540, 4616)]