20289655

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{223}}^1\times {\mathrm{587}}^1$

素因数の和:846

約数の個数: 16

約数和(自身を含む): 25288704

約数和(自身を除く): 4999049

約数列:

[1, 5, 31, 155, 223, 587, 1115, 2935, 6913, 18197, 34565, 90985, 130901, 654505, 4057931, 20289655]

約数ペア:

[(1, 20289655), (5, 4057931), (31, 654505), (155, 130901), (223, 90985), (587, 34565), (1115, 18197), (2935, 6913)]