20698288

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{191}}^1\times {\mathrm{521}}^1$

素因数の和:733

約数の個数: 40

約数和(自身を含む): 43497216

約数和(自身を除く): 22798928

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 191, 208, 382, 521, 764, 1042, 1528, 2084, 2483, 3056, 4168, 4966, 6773, 8336, 9932, 13546, 19864, 27092, 39728, 54184, 99511, 108368, 199022, 398044, 796088, 1293643, 1592176, 2587286, 5174572, 10349144, 20698288]

約数ペア:

[(1, 20698288), (2, 10349144), (4, 5174572), (8, 2587286), (13, 1592176), (16, 1293643), (26, 796088), (52, 398044), (104, 199022), (191, 108368), (208, 99511), (382, 54184), (521, 39728), (764, 27092), (1042, 19864), (1528, 13546), (2084, 9932), (2483, 8336), (3056, 6773), (4168, 4966)]