81698980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{371359}}^1$

素因数の和:371379

約数の個数: 24

約数和(自身を含む): 187165440

約数和(自身を除く): 105466460

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 371359, 742718, 1485436, 1856795, 3713590, 4084949, 7427180, 8169898, 16339796, 20424745, 40849490, 81698980]

約数ペア:

[(1, 81698980), (2, 40849490), (4, 20424745), (5, 16339796), (10, 8169898), (11, 7427180), (20, 4084949), (22, 3713590), (44, 1856795), (55, 1485436), (110, 742718), (220, 371359)]