85878980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{390359}}^1$

素因数の和:390379

約数の個数: 24

約数和(自身を含む): 196741440

約数和(自身を除く): 110862460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 390359, 780718, 1561436, 1951795, 3903590, 4293949, 7807180, 8587898, 17175796, 21469745, 42939490, 85878980]

約数ペア:

[(1, 85878980), (2, 42939490), (4, 21469745), (5, 17175796), (10, 8587898), (11, 7807180), (20, 4293949), (22, 3903590), (44, 1951795), (55, 1561436), (110, 780718), (220, 390359)]