21104985

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{3457}}^1$

素因数の和:3513

約数の個数: 32

約数和(自身を含む): 37844352

約数和(自身を除く): 16739367

約数列:

[1, 3, 5, 11, 15, 33, 37, 55, 111, 165, 185, 407, 555, 1221, 2035, 3457, 6105, 10371, 17285, 38027, 51855, 114081, 127909, 190135, 383727, 570405, 639545, 1406999, 1918635, 4220997, 7034995, 21104985]

約数ペア:

[(1, 21104985), (3, 7034995), (5, 4220997), (11, 1918635), (15, 1406999), (33, 639545), (37, 570405), (55, 383727), (111, 190135), (165, 127909), (185, 114081), (407, 51855), (555, 38027), (1221, 17285), (2035, 10371), (3457, 6105)]