20817585

素因数分解:

$3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{14923}}^1$

素因数の和:14965

約数の個数: 24

約数和(自身を含む): 37250304

約数和(自身を除く): 16432719

約数列:

[1, 3, 5, 9, 15, 31, 45, 93, 155, 279, 465, 1395, 14923, 44769, 74615, 134307, 223845, 462613, 671535, 1387839, 2313065, 4163517, 6939195, 20817585]

約数ペア:

[(1, 20817585), (3, 6939195), (5, 4163517), (9, 2313065), (15, 1387839), (31, 671535), (45, 462613), (93, 223845), (155, 134307), (279, 74615), (465, 44769), (1395, 14923)]