18827765

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{419}}^1$

素因数の和:497

約数の個数: 32

約数和(自身を含む): 26611200

約数和(自身を除く): 7783435

約数列:

[1, 5, 11, 19, 43, 55, 95, 209, 215, 419, 473, 817, 1045, 2095, 2365, 4085, 4609, 7961, 8987, 18017, 23045, 39805, 44935, 87571, 90085, 198187, 342323, 437855, 990935, 1711615, 3765553, 18827765]

約数ペア:

[(1, 18827765), (5, 3765553), (11, 1711615), (19, 990935), (43, 437855), (55, 342323), (95, 198187), (209, 90085), (215, 87571), (419, 44935), (473, 39805), (817, 23045), (1045, 18017), (2095, 8987), (2365, 7961), (4085, 4609)]