21453328

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103141}}^1$

素因数の和:103162

約数の個数: 20

約数和(自身を含む): 44763628

約数和(自身を除く): 23310300

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 103141, 206282, 412564, 825128, 1340833, 1650256, 2681666, 5363332, 10726664, 21453328]

約数ペア:

[(1, 21453328), (2, 10726664), (4, 5363332), (8, 2681666), (13, 1650256), (16, 1340833), (26, 825128), (52, 412564), (104, 206282), (208, 103141)]