21292518

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{272981}}^1$

素因数の和:272999

約数の個数: 16

約数和(自身を含む): 45860976

約数和(自身を除く): 24568458

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 272981, 545962, 818943, 1637886, 3548753, 7097506, 10646259, 21292518]

約数ペア:

[(1, 21292518), (2, 10646259), (3, 7097506), (6, 3548753), (13, 1637886), (26, 818943), (39, 545962), (78, 272981)]