21046928

素因数分解:

$2^4\times 7^1\times {\mathrm{113}}^1\times {\mathrm{1663}}^1$

素因数の和:1791

約数の個数: 40

約数和(自身を含む): 47044608

約数和(自身を除く): 25997680

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 113, 226, 452, 791, 904, 1582, 1663, 1808, 3164, 3326, 6328, 6652, 11641, 12656, 13304, 23282, 26608, 46564, 93128, 186256, 187919, 375838, 751676, 1315433, 1503352, 2630866, 3006704, 5261732, 10523464, 21046928]

約数ペア:

[(1, 21046928), (2, 10523464), (4, 5261732), (7, 3006704), (8, 2630866), (14, 1503352), (16, 1315433), (28, 751676), (56, 375838), (112, 187919), (113, 186256), (226, 93128), (452, 46564), (791, 26608), (904, 23282), (1582, 13304), (1663, 12656), (1808, 11641), (3164, 6652), (3326, 6328)]