639540385

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{375097}}^1$

素因数の和:375144

約数の個数: 16

約数和(自身を含む): 864225792

約数和(自身を除く): 224685407

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 375097, 1875485, 4126067, 11628007, 20630335, 58140035, 127908077, 639540385]

約数ペア:

[(1, 639540385), (5, 127908077), (11, 58140035), (31, 20630335), (55, 11628007), (155, 4126067), (341, 1875485), (1705, 375097)]