20520605

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{18913}}^1$

素因数の和:18956

約数の個数: 16

約数和(自身を含む): 29051904

約数和(自身を除く): 8531299

約数列:

[1, 5, 7, 31, 35, 155, 217, 1085, 18913, 94565, 132391, 586303, 661955, 2931515, 4104121, 20520605]

約数ペア:

[(1, 20520605), (5, 4104121), (7, 2931515), (31, 661955), (35, 586303), (155, 132391), (217, 94565), (1085, 18913)]