21440908

素因数分解:

$2^2\times {\mathrm{37}}^1\times {\mathrm{277}}^1\times {\mathrm{523}}^1$

素因数の和:841

約数の個数: 24

約数和(自身を含む): 38748752

約数和(自身を除く): 17307844

約数列:

[1, 2, 4, 37, 74, 148, 277, 523, 554, 1046, 1108, 2092, 10249, 19351, 20498, 38702, 40996, 77404, 144871, 289742, 579484, 5360227, 10720454, 21440908]

約数ペア:

[(1, 21440908), (2, 10720454), (4, 5360227), (37, 579484), (74, 289742), (148, 144871), (277, 77404), (523, 40996), (554, 38702), (1046, 20498), (1108, 19351), (2092, 10249)]