21386536

素因数分解:

$2^3\times {\mathrm{131}}^1\times {\mathrm{20407}}^1$

素因数の和:20544

約数の個数: 16

約数和(自身を含む): 40407840

約数和(自身を除く): 19021304

約数列:

[1, 2, 4, 8, 131, 262, 524, 1048, 20407, 40814, 81628, 163256, 2673317, 5346634, 10693268, 21386536]

約数ペア:

[(1, 21386536), (2, 10693268), (4, 5346634), (8, 2673317), (131, 163256), (262, 81628), (524, 40814), (1048, 20407)]