15993901

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{23}}^1\times {\mathrm{821}}^1$

素因数の和:873

約数の個数: 24

約数和(自身を含む): 20990592

約数和(自身を除く): 4996691

約数列:

[1, 7, 11, 23, 77, 121, 161, 253, 821, 847, 1771, 2783, 5747, 9031, 18883, 19481, 63217, 99341, 132181, 207713, 695387, 1453991, 2284843, 15993901]

約数ペア:

[(1, 15993901), (7, 2284843), (11, 1453991), (23, 695387), (77, 207713), (121, 132181), (161, 99341), (253, 63217), (821, 19481), (847, 18883), (1771, 9031), (2783, 5747)]