18721666

素因数分解:

$2^1\times {\mathrm{41}}^1\times {\mathrm{229}}^1\times {\mathrm{997}}^1$

素因数の和:1269

約数の個数: 16

約数和(自身を含む): 28922040

約数和(自身を除く): 10200374

約数列:

[1, 2, 41, 82, 229, 458, 997, 1994, 9389, 18778, 40877, 81754, 228313, 456626, 9360833, 18721666]

約数ペア:

[(1, 18721666), (2, 9360833), (41, 456626), (82, 228313), (229, 81754), (458, 40877), (997, 18778), (1994, 9389)]