20854872

素因数分解:

$2^3\times 3^2\times {\mathrm{163}}^1\times {\mathrm{1777}}^1$

素因数の和:1952

約数の個数: 48

約数和(自身を含む): 56860440

約数和(自身を除く): 36005568

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 163, 326, 489, 652, 978, 1304, 1467, 1777, 1956, 2934, 3554, 3912, 5331, 5868, 7108, 10662, 11736, 14216, 15993, 21324, 31986, 42648, 63972, 127944, 289651, 579302, 868953, 1158604, 1737906, 2317208, 2606859, 3475812, 5213718, 6951624, 10427436, 20854872]

約数ペア:

[(1, 20854872), (2, 10427436), (3, 6951624), (4, 5213718), (6, 3475812), (8, 2606859), (9, 2317208), (12, 1737906), (18, 1158604), (24, 868953), (36, 579302), (72, 289651), (163, 127944), (326, 63972), (489, 42648), (652, 31986), (978, 21324), (1304, 15993), (1467, 14216), (1777, 11736), (1956, 10662), (2934, 7108), (3554, 5868), (3912, 5331)]