988898878

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{101}}^1\times {\mathrm{40459}}^1$

素因数の和:40584

約数の個数: 24

約数和(自身を含む): 1646641080

約数和(自身を除く): 657742202

約数列:

[1, 2, 11, 22, 101, 121, 202, 242, 1111, 2222, 12221, 24442, 40459, 80918, 445049, 890098, 4086359, 4895539, 8172718, 9791078, 44949949, 89899898, 494449439, 988898878]

約数ペア:

[(1, 988898878), (2, 494449439), (11, 89899898), (22, 44949949), (101, 9791078), (121, 8172718), (202, 4895539), (242, 4086359), (1111, 890098), (2222, 445049), (12221, 80918), (24442, 40459)]