1991660

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{823}}^1$

素因数の和:854

約数の個数: 36

約数和(自身を含む): 4602864

約数和(自身を除く): 2611204

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 823, 1210, 1646, 2420, 3292, 4115, 8230, 9053, 16460, 18106, 36212, 45265, 90530, 99583, 181060, 199166, 398332, 497915, 995830, 1991660]

約数ペア:

[(1, 1991660), (2, 995830), (4, 497915), (5, 398332), (10, 199166), (11, 181060), (20, 99583), (22, 90530), (44, 45265), (55, 36212), (110, 18106), (121, 16460), (220, 9053), (242, 8230), (484, 4115), (605, 3292), (823, 2420), (1210, 1646)]