13521921

素因数分解:

$3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{20771}}^1$

素因数の和:20812

約数の個数: 16

約数和(自身を含む): 21270528

約数和(自身を除く): 7748607

約数列:

[1, 3, 7, 21, 31, 93, 217, 651, 20771, 62313, 145397, 436191, 643901, 1931703, 4507307, 13521921]

約数ペア:

[(1, 13521921), (3, 4507307), (7, 1931703), (21, 643901), (31, 436191), (93, 145397), (217, 62313), (651, 20771)]