18989776

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{91297}}^1$

素因数の和:91318

約数の個数: 20

約数和(自身を含む): 39623332

約数和(自身を除く): 20633556

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 91297, 182594, 365188, 730376, 1186861, 1460752, 2373722, 4747444, 9494888, 18989776]

約数ペア:

[(1, 18989776), (2, 9494888), (4, 4747444), (8, 2373722), (13, 1460752), (16, 1186861), (26, 730376), (52, 365188), (104, 182594), (208, 91297)]