20305985

素因数分解:

$5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{9511}}^1$

素因数の和:9584

約数の個数: 16

約数和(自身を含む): 28307712

約数和(自身を除く): 8001727

約数列:

[1, 5, 7, 35, 61, 305, 427, 2135, 9511, 47555, 66577, 332885, 580171, 2900855, 4061197, 20305985]

約数ペア:

[(1, 20305985), (5, 4061197), (7, 2900855), (35, 580171), (61, 332885), (305, 66577), (427, 47555), (2135, 9511)]