221557775

素因数分解:

$5^2\times {\mathrm{31}}^1\times {\mathrm{263}}^1\times {\mathrm{1087}}^1$

素因数の和:1391

約数の個数: 24

約数和(自身を含む): 284934144

約数和(自身を除く): 63376369

約数列:

[1, 5, 25, 31, 155, 263, 775, 1087, 1315, 5435, 6575, 8153, 27175, 33697, 40765, 168485, 203825, 285881, 842425, 1429405, 7147025, 8862311, 44311555, 221557775]

約数ペア:

[(1, 221557775), (5, 44311555), (25, 8862311), (31, 7147025), (155, 1429405), (263, 842425), (775, 285881), (1087, 203825), (1315, 168485), (5435, 40765), (6575, 33697), (8153, 27175)]