21122439

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{17471}}^1$

素因数の和:17518

約数の個数: 16

約数和(自身を含む): 31309824

約数和(自身を除く): 10187385

約数列:

[1, 3, 13, 31, 39, 93, 403, 1209, 17471, 52413, 227123, 541601, 681369, 1624803, 7040813, 21122439]

約数ペア:

[(1, 21122439), (3, 7040813), (13, 1624803), (31, 681369), (39, 541601), (93, 227123), (403, 52413), (1209, 17471)]