21800018

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{647}}^1\times {\mathrm{991}}^1$

素因数の和:1657

約数の個数: 16

約数和(自身を含む): 34712064

約数和(自身を除く): 12912046

約数列:

[1, 2, 17, 34, 647, 991, 1294, 1982, 10999, 16847, 21998, 33694, 641177, 1282354, 10900009, 21800018]

約数ペア:

[(1, 21800018), (2, 10900009), (17, 1282354), (34, 641177), (647, 33694), (991, 21998), (1294, 16847), (1982, 10999)]