19208749

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{229}}^1\times {\mathrm{521}}^1$

素因数の和:780

約数の個数: 16

約数和(自身を含む): 23051520

約数和(自身を除く): 3842771

約数列:

[1, 7, 23, 161, 229, 521, 1603, 3647, 5267, 11983, 36869, 83881, 119309, 835163, 2744107, 19208749]

約数ペア:

[(1, 19208749), (7, 2744107), (23, 835163), (161, 119309), (229, 83881), (521, 36869), (1603, 11983), (3647, 5267)]