20176490920

素因数分解:

$2^3\times 5^1\times {\mathrm{4049}}^1\times {\mathrm{124577}}^1$

素因数の和:128637

約数の個数: 32

約数和(自身を含む): 45408681000

約数和(自身を除く): 25232190080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 4049, 8098, 16196, 20245, 32392, 40490, 80980, 124577, 161960, 249154, 498308, 622885, 996616, 1245770, 2491540, 4983080, 504412273, 1008824546, 2017649092, 2522061365, 4035298184, 5044122730, 10088245460, 20176490920]

約数ペア:

[(1, 20176490920), (2, 10088245460), (4, 5044122730), (5, 4035298184), (8, 2522061365), (10, 2017649092), (20, 1008824546), (40, 504412273), (4049, 4983080), (8098, 2491540), (16196, 1245770), (20245, 996616), (32392, 622885), (40490, 498308), (80980, 249154), (124577, 161960)]