19907017

素因数分解:

${\mathrm{13}}^4\times {\mathrm{17}}^1\times {\mathrm{41}}^1$

素因数の和:110

約数の個数: 20

約数和(自身を含む): 23391396

約数和(自身を除く): 3484379

約数列:

[1, 13, 17, 41, 169, 221, 533, 697, 2197, 2873, 6929, 9061, 28561, 37349, 90077, 117793, 485537, 1171001, 1531309, 19907017]

約数ペア:

[(1, 19907017), (13, 1531309), (17, 1171001), (41, 485537), (169, 117793), (221, 90077), (533, 37349), (697, 28561), (2197, 9061), (2873, 6929)]