218436974

素因数分解:

$2^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{223}}^1$

素因数の和:361

約数の個数: 64

約数和(自身を含む): 405307392

約数和(自身を除く): 186870418

約数列:

[1, 2, 7, 14, 31, 37, 61, 62, 74, 122, 217, 223, 259, 427, 434, 446, 518, 854, 1147, 1561, 1891, 2257, 2294, 3122, 3782, 4514, 6913, 8029, 8251, 13237, 13603, 13826, 15799, 16058, 16502, 26474, 27206, 31598, 48391, 57757, 69967, 95221, 96782, 115514, 139934, 190442, 255781, 421693, 489769, 503311, 511562, 843386, 979538, 1006622, 1790467, 2951851, 3523177, 3580934, 5903702, 7046354, 15602641, 31205282, 109218487, 218436974]

約数ペア:

[(1, 218436974), (2, 109218487), (7, 31205282), (14, 15602641), (31, 7046354), (37, 5903702), (61, 3580934), (62, 3523177), (74, 2951851), (122, 1790467), (217, 1006622), (223, 979538), (259, 843386), (427, 511562), (434, 503311), (446, 489769), (518, 421693), (854, 255781), (1147, 190442), (1561, 139934), (1891, 115514), (2257, 96782), (2294, 95221), (3122, 69967), (3782, 57757), (4514, 48391), (6913, 31598), (8029, 27206), (8251, 26474), (13237, 16502), (13603, 16058), (13826, 15799)]