21227479

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{2621}}^1$

素因数の和:2730

約数の個数: 16

約数和(自身を含む): 26429760

約数和(自身を除く): 5202281

約数列:

[1, 7, 13, 89, 91, 623, 1157, 2621, 8099, 18347, 34073, 233269, 238511, 1632883, 3032497, 21227479]

約数ペア:

[(1, 21227479), (7, 3032497), (13, 1632883), (89, 238511), (91, 233269), (623, 34073), (1157, 18347), (2621, 8099)]