20505315

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{97}}^1\times {\mathrm{829}}^1$

素因数の和:951

約数の個数: 32

約数和(自身を含む): 35138880

約数和(自身を除く): 14633565

約数列:

[1, 3, 5, 15, 17, 51, 85, 97, 255, 291, 485, 829, 1455, 1649, 2487, 4145, 4947, 8245, 12435, 14093, 24735, 42279, 70465, 80413, 211395, 241239, 402065, 1206195, 1367021, 4101063, 6835105, 20505315]

約数ペア:

[(1, 20505315), (3, 6835105), (5, 4101063), (15, 1367021), (17, 1206195), (51, 402065), (85, 241239), (97, 211395), (255, 80413), (291, 70465), (485, 42279), (829, 24735), (1455, 14093), (1649, 12435), (2487, 8245), (4145, 4947)]