21318678

素因数分解:

$2^1\times 3^2\times {\mathrm{131}}^1\times {\mathrm{9041}}^1$

素因数の和:9180

約数の個数: 24

約数和(自身を含む): 46548216

約数和(自身を除く): 25229538

約数列:

[1, 2, 3, 6, 9, 18, 131, 262, 393, 786, 1179, 2358, 9041, 18082, 27123, 54246, 81369, 162738, 1184371, 2368742, 3553113, 7106226, 10659339, 21318678]

約数ペア:

[(1, 21318678), (2, 10659339), (3, 7106226), (6, 3553113), (9, 2368742), (18, 1184371), (131, 162738), (262, 81369), (393, 54246), (786, 27123), (1179, 18082), (2358, 9041)]