20312915

素因数分解:

$5^1\times 7^1\times {\mathrm{89}}^1\times {\mathrm{6521}}^1$

素因数の和:6622

約数の個数: 16

約数和(自身を含む): 28175040

約数和(自身を除く): 7862125

約数列:

[1, 5, 7, 35, 89, 445, 623, 3115, 6521, 32605, 45647, 228235, 580369, 2901845, 4062583, 20312915]

約数ペア:

[(1, 20312915), (5, 4062583), (7, 2901845), (35, 580369), (89, 228235), (445, 45647), (623, 32605), (3115, 6521)]