15640391

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{181}}^1$

素因数の和:251

約数の個数: 24

約数和(自身を含む): 18773664

約数和(自身を除く): 3133273

約数列:

[1, 13, 17, 23, 181, 221, 289, 299, 391, 2353, 3077, 3757, 4163, 5083, 6647, 40001, 52309, 54119, 70771, 86411, 680017, 920023, 1203107, 15640391]

約数ペア:

[(1, 15640391), (13, 1203107), (17, 920023), (23, 680017), (181, 86411), (221, 70771), (289, 54119), (299, 52309), (391, 40001), (2353, 6647), (3077, 5083), (3757, 4163)]