20847231

素因数分解:

$3^2\times {\mathrm{79}}^1\times {\mathrm{109}}^1\times {\mathrm{269}}^1$

素因数の和:463

約数の個数: 24

約数和(自身を含む): 30888000

約数和(自身を除く): 10040769

約数列:

[1, 3, 9, 79, 109, 237, 269, 327, 711, 807, 981, 2421, 8611, 21251, 25833, 29321, 63753, 77499, 87963, 191259, 263889, 2316359, 6949077, 20847231]

約数ペア:

[(1, 20847231), (3, 6949077), (9, 2316359), (79, 263889), (109, 191259), (237, 87963), (269, 77499), (327, 63753), (711, 29321), (807, 25833), (981, 21251), (2421, 8611)]