20456475

素因数分解:

$3^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{20981}}^1$

素因数の和:21007

約数の個数: 24

約数和(自身を含む): 36424752

約数和(自身を除く): 15968277

約数列:

[1, 3, 5, 13, 15, 25, 39, 65, 75, 195, 325, 975, 20981, 62943, 104905, 272753, 314715, 524525, 818259, 1363765, 1573575, 4091295, 6818825, 20456475]

約数ペア:

[(1, 20456475), (3, 6818825), (5, 4091295), (13, 1573575), (15, 1363765), (25, 818259), (39, 524525), (65, 314715), (75, 272753), (195, 104905), (325, 62943), (975, 20981)]