21202258

素因数分解:

$2^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^2$

素因数の和:179

約数の個数: 48

約数和(自身を含む): 41401152

約数和(自身を除く): 20198894

約数列:

[1, 2, 7, 11, 14, 22, 37, 61, 74, 77, 122, 154, 259, 407, 427, 518, 671, 814, 854, 1342, 2257, 2849, 3721, 4514, 4697, 5698, 7442, 9394, 15799, 24827, 26047, 31598, 40931, 49654, 52094, 81862, 137677, 173789, 275354, 286517, 347578, 573034, 963739, 1514447, 1927478, 3028894, 10601129, 21202258]

約数ペア:

[(1, 21202258), (2, 10601129), (7, 3028894), (11, 1927478), (14, 1514447), (22, 963739), (37, 573034), (61, 347578), (74, 286517), (77, 275354), (122, 173789), (154, 137677), (259, 81862), (407, 52094), (427, 49654), (518, 40931), (671, 31598), (814, 26047), (854, 24827), (1342, 15799), (2257, 9394), (2849, 7442), (3721, 5698), (4514, 4697)]