664580015

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{389783}}^1$

素因数の和:389830

約数の個数: 16

約数和(自身を含む): 898062336

約数和(自身を除く): 233482321

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 389783, 1948915, 4287613, 12083273, 21438065, 60416365, 132916003, 664580015]

約数ペア:

[(1, 664580015), (5, 132916003), (11, 60416365), (31, 21438065), (55, 12083273), (155, 4287613), (341, 1948915), (1705, 389783)]