201818980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{421}}^1\times {\mathrm{2179}}^1$

素因数の和:2620

約数の個数: 48

約数和(自身を含む): 463659840

約数和(自身を除く): 261840860

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 421, 842, 1684, 2105, 2179, 4210, 4358, 4631, 8420, 8716, 9262, 10895, 18524, 21790, 23155, 23969, 43580, 46310, 47938, 92620, 95876, 119845, 239690, 479380, 917359, 1834718, 3669436, 4586795, 9173590, 10090949, 18347180, 20181898, 40363796, 50454745, 100909490, 201818980]

約数ペア:

[(1, 201818980), (2, 100909490), (4, 50454745), (5, 40363796), (10, 20181898), (11, 18347180), (20, 10090949), (22, 9173590), (44, 4586795), (55, 3669436), (110, 1834718), (220, 917359), (421, 479380), (842, 239690), (1684, 119845), (2105, 95876), (2179, 92620), (4210, 47938), (4358, 46310), (4631, 43580), (8420, 23969), (8716, 23155), (9262, 21790), (10895, 18524)]