20090015

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{11783}}^1$

素因数の和:11830

約数の個数: 16

約数和(自身を含む): 27150336

約数和(自身を除く): 7060321

約数列:

[1, 5, 11, 31, 55, 155, 341, 1705, 11783, 58915, 129613, 365273, 648065, 1826365, 4018003, 20090015]

約数ペア:

[(1, 20090015), (5, 4018003), (11, 1826365), (31, 648065), (55, 365273), (155, 129613), (341, 58915), (1705, 11783)]