20557280

素因数分解:

$2^5\times 5^1\times {\mathrm{128483}}^1$

素因数の和:128498

約数の個数: 24

約数和(自身を含む): 48566952

約数和(自身を除く): 28009672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 128483, 256966, 513932, 642415, 1027864, 1284830, 2055728, 2569660, 4111456, 5139320, 10278640, 20557280]

約数ペア:

[(1, 20557280), (2, 10278640), (4, 5139320), (5, 4111456), (8, 2569660), (10, 2055728), (16, 1284830), (20, 1027864), (32, 642415), (40, 513932), (80, 256966), (160, 128483)]