28867815

素因数分解:

$3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{83}}^1\times {\mathrm{131}}^1$

素因数の和:284

約数の個数: 48

約数和(自身を含む): 51891840

約数和(自身を除く): 23024025

約数列:

[1, 3, 5, 9, 15, 45, 59, 83, 131, 177, 249, 295, 393, 415, 531, 655, 747, 885, 1179, 1245, 1965, 2655, 3735, 4897, 5895, 7729, 10873, 14691, 23187, 24485, 32619, 38645, 44073, 54365, 69561, 73455, 97857, 115935, 163095, 220365, 347805, 489285, 641507, 1924521, 3207535, 5773563, 9622605, 28867815]

約数ペア:

[(1, 28867815), (3, 9622605), (5, 5773563), (9, 3207535), (15, 1924521), (45, 641507), (59, 489285), (83, 347805), (131, 220365), (177, 163095), (249, 115935), (295, 97857), (393, 73455), (415, 69561), (531, 54365), (655, 44073), (747, 38645), (885, 32619), (1179, 24485), (1245, 23187), (1965, 14691), (2655, 10873), (3735, 7729), (4897, 5895)]