18400641

素因数分解:

$3^1\times 7^1\times {\mathrm{47}}^1\times {\mathrm{103}}^1\times {\mathrm{181}}^1$

素因数の和:341

約数の個数: 32

約数和(自身を含む): 29073408

約数和(自身を除く): 10672767

約数列:

[1, 3, 7, 21, 47, 103, 141, 181, 309, 329, 543, 721, 987, 1267, 2163, 3801, 4841, 8507, 14523, 18643, 25521, 33887, 55929, 59549, 101661, 130501, 178647, 391503, 876221, 2628663, 6133547, 18400641]

約数ペア:

[(1, 18400641), (3, 6133547), (7, 2628663), (21, 876221), (47, 391503), (103, 178647), (141, 130501), (181, 101661), (309, 59549), (329, 55929), (543, 33887), (721, 25521), (987, 18643), (1267, 14523), (2163, 8507), (3801, 4841)]