20279660

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23581}}^1$

素因数の和:23633

約数の個数: 24

約数和(自身を含む): 43579536

約数和(自身を除く): 23299876

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 23581, 47162, 94324, 117905, 235810, 471620, 1013983, 2027966, 4055932, 5069915, 10139830, 20279660]

約数ペア:

[(1, 20279660), (2, 10139830), (4, 5069915), (5, 4055932), (10, 2027966), (20, 1013983), (43, 471620), (86, 235810), (172, 117905), (215, 94324), (430, 47162), (860, 23581)]