217655851

素因数分解:

$7^1\times {\mathrm{73}}^1\times {\mathrm{157}}^1\times {\mathrm{2713}}^1$

素因数の和:2950

約数の個数: 16

約数和(自身を含む): 253856704

約数和(自身を除く): 36200853

約数列:

[1, 7, 73, 157, 511, 1099, 2713, 11461, 18991, 80227, 198049, 425941, 1386343, 2981587, 31093693, 217655851]

約数ペア:

[(1, 217655851), (7, 31093693), (73, 2981587), (157, 1386343), (511, 425941), (1099, 198049), (2713, 80227), (11461, 18991)]