18639124

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{113}}^1\times {\mathrm{137}}^1$

素因数の和:304

約数の個数: 48

約数和(自身を含む): 38763648

約数和(自身を除く): 20124524

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 113, 137, 172, 226, 274, 301, 452, 548, 602, 791, 959, 1204, 1582, 1918, 3164, 3836, 4859, 5891, 9718, 11782, 15481, 19436, 23564, 30962, 34013, 41237, 61924, 68026, 82474, 108367, 136052, 164948, 216734, 433468, 665683, 1331366, 2662732, 4659781, 9319562, 18639124]

約数ペア:

[(1, 18639124), (2, 9319562), (4, 4659781), (7, 2662732), (14, 1331366), (28, 665683), (43, 433468), (86, 216734), (113, 164948), (137, 136052), (172, 108367), (226, 82474), (274, 68026), (301, 61924), (452, 41237), (548, 34013), (602, 30962), (791, 23564), (959, 19436), (1204, 15481), (1582, 11782), (1918, 9718), (3164, 5891), (3836, 4859)]