15881995

素因数分解:

$5^1\times {\mathrm{17}}^2\times {\mathrm{29}}^1\times {\mathrm{379}}^1$

素因数の和:447

約数の個数: 24

約数和(自身を含む): 20998800

約数和(自身を除く): 5116805

約数列:

[1, 5, 17, 29, 85, 145, 289, 379, 493, 1445, 1895, 2465, 6443, 8381, 10991, 32215, 41905, 54955, 109531, 186847, 547655, 934235, 3176399, 15881995]

約数ペア:

[(1, 15881995), (5, 3176399), (17, 934235), (29, 547655), (85, 186847), (145, 109531), (289, 54955), (379, 41905), (493, 32215), (1445, 10991), (1895, 8381), (2465, 6443)]