21072145

素因数分解:

$5^1\times {\mathrm{59}}^1\times {\mathrm{61}}^1\times {\mathrm{1171}}^1$

素因数の和:1296

約数の個数: 16

約数和(自身を含む): 26159040

約数和(自身を除く): 5086895

約数列:

[1, 5, 59, 61, 295, 305, 1171, 3599, 5855, 17995, 69089, 71431, 345445, 357155, 4214429, 21072145]

約数ペア:

[(1, 21072145), (5, 4214429), (59, 357155), (61, 345445), (295, 71431), (305, 69089), (1171, 17995), (3599, 5855)]