21540381

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{3797}}^1$

素因数の和:3892

約数の個数: 16

約数和(自身を含む): 30140928

約数和(自身を除く): 8600547

約数列:

[1, 3, 31, 61, 93, 183, 1891, 3797, 5673, 11391, 117707, 231617, 353121, 694851, 7180127, 21540381]

約数ペア:

[(1, 21540381), (3, 7180127), (31, 694851), (61, 353121), (93, 231617), (183, 117707), (1891, 11391), (3797, 5673)]