20517664

素因数分解:

$2^5\times {\mathrm{647}}^1\times {\mathrm{991}}^1$

素因数の和:1648

約数の個数: 24

約数和(自身を含む): 40497408

約数和(自身を除く): 19979744

約数列:

[1, 2, 4, 8, 16, 32, 647, 991, 1294, 1982, 2588, 3964, 5176, 7928, 10352, 15856, 20704, 31712, 641177, 1282354, 2564708, 5129416, 10258832, 20517664]

約数ペア:

[(1, 20517664), (2, 10258832), (4, 5129416), (8, 2564708), (16, 1282354), (32, 641177), (647, 31712), (991, 20704), (1294, 15856), (1982, 10352), (2588, 7928), (3964, 5176)]