21120888

素因数分解:

$2^3\times 3^1\times {\mathrm{163}}^1\times {\mathrm{5399}}^1$

素因数の和:5571

約数の個数: 32

約数和(自身を含む): 53136000

約数和(自身を除く): 32015112

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 163, 326, 489, 652, 978, 1304, 1956, 3912, 5399, 10798, 16197, 21596, 32394, 43192, 64788, 129576, 880037, 1760074, 2640111, 3520148, 5280222, 7040296, 10560444, 21120888]

約数ペア:

[(1, 21120888), (2, 10560444), (3, 7040296), (4, 5280222), (6, 3520148), (8, 2640111), (12, 1760074), (24, 880037), (163, 129576), (326, 64788), (489, 43192), (652, 32394), (978, 21596), (1304, 16197), (1956, 10798), (3912, 5399)]