20118748

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{421}}^1\times {\mathrm{919}}^1$

素因数の和:1357

約数の個数: 24

約数和(自身を含む): 38047520

約数和(自身を除く): 17928772

約数列:

[1, 2, 4, 13, 26, 52, 421, 842, 919, 1684, 1838, 3676, 5473, 10946, 11947, 21892, 23894, 47788, 386899, 773798, 1547596, 5029687, 10059374, 20118748]

約数ペア:

[(1, 20118748), (2, 10059374), (4, 5029687), (13, 1547596), (26, 773798), (52, 386899), (421, 47788), (842, 23894), (919, 21892), (1684, 11947), (1838, 10946), (3676, 5473)]