21217794

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{139}}^1$

素因数の和:279

約数の個数: 64

約数和(自身を含む): 48921600

約数和(自身を除く): 27703806

約数列:

[1, 2, 3, 6, 13, 19, 26, 38, 39, 57, 78, 103, 114, 139, 206, 247, 278, 309, 417, 494, 618, 741, 834, 1339, 1482, 1807, 1957, 2641, 2678, 3614, 3914, 4017, 5282, 5421, 5871, 7923, 8034, 10842, 11742, 14317, 15846, 25441, 28634, 34333, 42951, 50882, 68666, 76323, 85902, 102999, 152646, 186121, 205998, 272023, 372242, 544046, 558363, 816069, 1116726, 1632138, 3536299, 7072598, 10608897, 21217794]

約数ペア:

[(1, 21217794), (2, 10608897), (3, 7072598), (6, 3536299), (13, 1632138), (19, 1116726), (26, 816069), (38, 558363), (39, 544046), (57, 372242), (78, 272023), (103, 205998), (114, 186121), (139, 152646), (206, 102999), (247, 85902), (278, 76323), (309, 68666), (417, 50882), (494, 42951), (618, 34333), (741, 28634), (834, 25441), (1339, 15846), (1482, 14317), (1807, 11742), (1957, 10842), (2641, 8034), (2678, 7923), (3614, 5871), (3914, 5421), (4017, 5282)]