21251151

素因数分解:

$3^2\times {\mathrm{31}}^1\times {\mathrm{59}}^1\times {\mathrm{1291}}^1$

素因数の和:1387

約数の個数: 24

約数和(自身を含む): 32248320

約数和(自身を除く): 10997169

約数列:

[1, 3, 9, 31, 59, 93, 177, 279, 531, 1291, 1829, 3873, 5487, 11619, 16461, 40021, 76169, 120063, 228507, 360189, 685521, 2361239, 7083717, 21251151]

約数ペア:

[(1, 21251151), (3, 7083717), (9, 2361239), (31, 685521), (59, 360189), (93, 228507), (177, 120063), (279, 76169), (531, 40021), (1291, 16461), (1829, 11619), (3873, 5487)]