20123687944

素因数分解:

$2^3\times {\mathrm{31}}^1\times {\mathrm{81143903}}^1$

素因数の和:81143940

約数の個数: 16

約数和(自身を含む): 38949073920

約数和(自身を除く): 18825385976

約数列:

[1, 2, 4, 8, 31, 62, 124, 248, 81143903, 162287806, 324575612, 649151224, 2515460993, 5030921986, 10061843972, 20123687944]

約数ペア:

[(1, 20123687944), (2, 10061843972), (4, 5030921986), (8, 2515460993), (31, 649151224), (62, 324575612), (124, 162287806), (248, 81143903)]