7420815

素因数分解:

$3^4\times 5^1\times {\mathrm{73}}^1\times {\mathrm{251}}^1$

素因数の和:341

約数の個数: 40

約数和(自身を含む): 13538448

約数和(自身を除く): 6117633

約数列:

[1, 3, 5, 9, 15, 27, 45, 73, 81, 135, 219, 251, 365, 405, 657, 753, 1095, 1255, 1971, 2259, 3285, 3765, 5913, 6777, 9855, 11295, 18323, 20331, 29565, 33885, 54969, 91615, 101655, 164907, 274845, 494721, 824535, 1484163, 2473605, 7420815]

約数ペア:

[(1, 7420815), (3, 2473605), (5, 1484163), (9, 824535), (15, 494721), (27, 274845), (45, 164907), (73, 101655), (81, 91615), (135, 54969), (219, 33885), (251, 29565), (365, 20331), (405, 18323), (657, 11295), (753, 9855), (1095, 6777), (1255, 5913), (1971, 3765), (2259, 3285)]