20485265

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{887}}^1$

素因数の和:1072

約数の個数: 16

約数和(自身を含む): 25574400

約数和(自身を除く): 5089135

約数列:

[1, 5, 31, 149, 155, 745, 887, 4435, 4619, 23095, 27497, 132163, 137485, 660815, 4097053, 20485265]

約数ペア:

[(1, 20485265), (5, 4097053), (31, 660815), (149, 137485), (155, 132163), (745, 27497), (887, 23095), (4435, 4619)]