18688966

素因数分解:

$2^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1\times {\mathrm{1123}}^1$

素因数の和:1335

約数の個数: 16

約数和(自身を含む): 28769904

約数和(自身を除く): 10080938

約数列:

[1, 2, 53, 106, 157, 314, 1123, 2246, 8321, 16642, 59519, 119038, 176311, 352622, 9344483, 18688966]

約数ペア:

[(1, 18688966), (2, 9344483), (53, 352622), (106, 176311), (157, 119038), (314, 59519), (1123, 16642), (2246, 8321)]