81672580

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{33749}}^1$

素因数の和:33780

約数の個数: 36

約数和(自身を含む): 188527500

約数和(自身を除く): 106854920

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 33749, 67498, 134996, 168745, 337490, 371239, 674980, 742478, 1484956, 1856195, 3712390, 4083629, 7424780, 8167258, 16334516, 20418145, 40836290, 81672580]

約数ペア:

[(1, 81672580), (2, 40836290), (4, 20418145), (5, 16334516), (10, 8167258), (11, 7424780), (20, 4083629), (22, 3712390), (44, 1856195), (55, 1484956), (110, 742478), (121, 674980), (220, 371239), (242, 337490), (484, 168745), (605, 134996), (1210, 67498), (2420, 33749)]