21867209

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{2333}}^1$

素因数の和:2456

約数の個数: 16

約数和(自身を含む): 27186432

約数和(自身を除く): 5319223

約数列:

[1, 7, 13, 91, 103, 721, 1339, 2333, 9373, 16331, 30329, 212303, 240299, 1682093, 3123887, 21867209]

約数ペア:

[(1, 21867209), (7, 3123887), (13, 1682093), (91, 240299), (103, 212303), (721, 30329), (1339, 16331), (2333, 9373)]