18746674544

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{90128243}}^1$

素因数の和:90128264

約数の個数: 20

約数和(自身を含む): 39115657896

約数和(自身を除く): 20368983352

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 90128243, 180256486, 360512972, 721025944, 1171667159, 1442051888, 2343334318, 4686668636, 9373337272, 18746674544]

約数ペア:

[(1, 18746674544), (2, 9373337272), (4, 4686668636), (8, 2343334318), (13, 1442051888), (16, 1171667159), (26, 721025944), (52, 360512972), (104, 180256486), (208, 90128243)]