8400915

素因数分解:

$3^4\times 5^1\times {\mathrm{20743}}^1$

素因数の和:20760

約数の個数: 20

約数和(自身を含む): 15060144

約数和(自身を除く): 6659229

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 20743, 62229, 103715, 186687, 311145, 560061, 933435, 1680183, 2800305, 8400915]

約数ペア:

[(1, 8400915), (3, 2800305), (5, 1680183), (9, 933435), (15, 560061), (27, 311145), (45, 186687), (81, 103715), (135, 62229), (405, 20743)]