20421447

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{421}}^1$

素因数の和:503

約数の個数: 32

約数和(自身を含む): 30789120

約数和(自身を除く): 10367673

約数列:

[1, 3, 19, 23, 37, 57, 69, 111, 421, 437, 703, 851, 1263, 1311, 2109, 2553, 7999, 9683, 15577, 16169, 23997, 29049, 46731, 48507, 183977, 295963, 358271, 551931, 887889, 1074813, 6807149, 20421447]

約数ペア:

[(1, 20421447), (3, 6807149), (19, 1074813), (23, 887889), (37, 551931), (57, 358271), (69, 295963), (111, 183977), (421, 48507), (437, 46731), (703, 29049), (851, 23997), (1263, 16169), (1311, 15577), (2109, 9683), (2553, 7999)]