21991354

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{2341}}^1$

素因数の和:2422

約数の個数: 32

約数和(自身を含む): 41818752

約数和(自身を除く): 19827398

約数列:

[1, 2, 7, 11, 14, 22, 61, 77, 122, 154, 427, 671, 854, 1342, 2341, 4682, 4697, 9394, 16387, 25751, 32774, 51502, 142801, 180257, 285602, 360514, 999607, 1570811, 1999214, 3141622, 10995677, 21991354]

約数ペア:

[(1, 21991354), (2, 10995677), (7, 3141622), (11, 1999214), (14, 1570811), (22, 999607), (61, 360514), (77, 285602), (122, 180257), (154, 142801), (427, 51502), (671, 32774), (854, 25751), (1342, 16387), (2341, 9394), (4682, 4697)]