21189956

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{4651}}^1$

素因数の和:4739

約数の個数: 24

約数和(自身を含む): 39858336

約数和(自身を除く): 18668380

約数列:

[1, 2, 4, 17, 34, 67, 68, 134, 268, 1139, 2278, 4556, 4651, 9302, 18604, 79067, 158134, 311617, 316268, 623234, 1246468, 5297489, 10594978, 21189956]

約数ペア:

[(1, 21189956), (2, 10594978), (4, 5297489), (17, 1246468), (34, 623234), (67, 316268), (68, 311617), (134, 158134), (268, 79067), (1139, 18604), (2278, 9302), (4556, 4651)]