309915

素因数分解:

$3^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:179

約数の個数: 24

約数和(自身を含む): 550368

約数和(自身を除く): 240453

約数列:

[1, 3, 5, 9, 15, 45, 71, 97, 213, 291, 355, 485, 639, 873, 1065, 1455, 3195, 4365, 6887, 20661, 34435, 61983, 103305, 309915]

約数ペア:

[(1, 309915), (3, 103305), (5, 61983), (9, 34435), (15, 20661), (45, 6887), (71, 4365), (97, 3195), (213, 1455), (291, 1065), (355, 873), (485, 639)]