20524960

素因数分解:

$2^5\times 5^1\times {\mathrm{163}}^1\times {\mathrm{787}}^1$

素因数の和:965

約数の個数: 48

約数和(自身を含む): 48849696

約数和(自身を除く): 28324736

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 163, 326, 652, 787, 815, 1304, 1574, 1630, 2608, 3148, 3260, 3935, 5216, 6296, 6520, 7870, 12592, 13040, 15740, 25184, 26080, 31480, 62960, 125920, 128281, 256562, 513124, 641405, 1026248, 1282810, 2052496, 2565620, 4104992, 5131240, 10262480, 20524960]

約数ペア:

[(1, 20524960), (2, 10262480), (4, 5131240), (5, 4104992), (8, 2565620), (10, 2052496), (16, 1282810), (20, 1026248), (32, 641405), (40, 513124), (80, 256562), (160, 128281), (163, 125920), (326, 62960), (652, 31480), (787, 26080), (815, 25184), (1304, 15740), (1574, 13040), (1630, 12592), (2608, 7870), (3148, 6520), (3260, 6296), (3935, 5216)]