21104837

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{89}}^1$

素因数の和:185

約数の個数: 32

約数和(自身を含む): 25855200

約数和(自身を除く): 4750363

約数列:

[1, 13, 17, 29, 37, 89, 221, 377, 481, 493, 629, 1073, 1157, 1513, 2581, 3293, 6409, 8177, 13949, 18241, 19669, 33553, 42809, 43877, 55981, 95497, 237133, 570401, 727753, 1241461, 1623449, 21104837]

約数ペア:

[(1, 21104837), (13, 1623449), (17, 1241461), (29, 727753), (37, 570401), (89, 237133), (221, 95497), (377, 55981), (481, 43877), (493, 42809), (629, 33553), (1073, 19669), (1157, 18241), (1513, 13949), (2581, 8177), (3293, 6409)]