21375495

素因数分解:

$3^5\times 5^1\times {\mathrm{73}}^1\times {\mathrm{241}}^1$

素因数の和:334

約数の個数: 48

約数和(自身を含む): 39111072

約数和(自身を除く): 17735577

約数列:

[1, 3, 5, 9, 15, 27, 45, 73, 81, 135, 219, 241, 243, 365, 405, 657, 723, 1095, 1205, 1215, 1971, 2169, 3285, 3615, 5913, 6507, 9855, 10845, 17593, 17739, 19521, 29565, 32535, 52779, 58563, 87965, 88695, 97605, 158337, 263895, 292815, 475011, 791685, 1425033, 2375055, 4275099, 7125165, 21375495]

約数ペア:

[(1, 21375495), (3, 7125165), (5, 4275099), (9, 2375055), (15, 1425033), (27, 791685), (45, 475011), (73, 292815), (81, 263895), (135, 158337), (219, 97605), (241, 88695), (243, 87965), (365, 58563), (405, 52779), (657, 32535), (723, 29565), (1095, 19521), (1205, 17739), (1215, 17593), (1971, 10845), (2169, 9855), (3285, 6507), (3615, 5913)]