21042243

素因数分解:

$3^2\times {\mathrm{17}}^1\times {\mathrm{83}}^1\times {\mathrm{1657}}^1$

素因数の和:1763

約数の個数: 24

約数和(自身を含む): 32589648

約数和(自身を除く): 11547405

約数列:

[1, 3, 9, 17, 51, 83, 153, 249, 747, 1411, 1657, 4233, 4971, 12699, 14913, 28169, 84507, 137531, 253521, 412593, 1237779, 2338027, 7014081, 21042243]

約数ペア:

[(1, 21042243), (3, 7014081), (9, 2338027), (17, 1237779), (51, 412593), (83, 253521), (153, 137531), (249, 84507), (747, 28169), (1411, 14913), (1657, 12699), (4233, 4971)]