20653839

素因数分解:

$3^3\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{421}}^1$

素因数の和:532

約数の個数: 32

約数和(自身を含む): 32409600

約数和(自身を除く): 11755761

約数列:

[1, 3, 9, 23, 27, 69, 79, 207, 237, 421, 621, 711, 1263, 1817, 2133, 3789, 5451, 9683, 11367, 16353, 29049, 33259, 49059, 87147, 99777, 261441, 299331, 764957, 897993, 2294871, 6884613, 20653839]

約数ペア:

[(1, 20653839), (3, 6884613), (9, 2294871), (23, 897993), (27, 764957), (69, 299331), (79, 261441), (207, 99777), (237, 87147), (421, 49059), (621, 33259), (711, 29049), (1263, 16353), (1817, 11367), (2133, 9683), (3789, 5451)]