19720238

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{523}}^1\times {\mathrm{1109}}^1$

素因数の和:1651

約数の個数: 16

約数和(自身を含む): 31408560

約数和(自身を除く): 11688322

約数列:

[1, 2, 17, 34, 523, 1046, 1109, 2218, 8891, 17782, 18853, 37706, 580007, 1160014, 9860119, 19720238]

約数ペア:

[(1, 19720238), (2, 9860119), (17, 1160014), (34, 580007), (523, 37706), (1046, 18853), (1109, 17782), (2218, 8891)]