13815921

素因数分解:

$3^1\times 7^1\times {\mathrm{307}}^1\times {\mathrm{2143}}^1$

素因数の和:2460

約数の個数: 16

約数和(自身を含む): 21131264

約数和(自身を除く): 7315343

約数列:

[1, 3, 7, 21, 307, 921, 2143, 2149, 6429, 6447, 15001, 45003, 657901, 1973703, 4605307, 13815921]

約数ペア:

[(1, 13815921), (3, 4605307), (7, 1973703), (21, 657901), (307, 45003), (921, 15001), (2143, 6447), (2149, 6429)]