20490140

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8467}}^1$

素因数の和:8498

約数の個数: 36

約数和(自身を含む): 47302248

約数和(自身を除く): 26812108

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8467, 16934, 33868, 42335, 84670, 93137, 169340, 186274, 372548, 465685, 931370, 1024507, 1862740, 2049014, 4098028, 5122535, 10245070, 20490140]

約数ペア:

[(1, 20490140), (2, 10245070), (4, 5122535), (5, 4098028), (10, 2049014), (11, 1862740), (20, 1024507), (22, 931370), (44, 465685), (55, 372548), (110, 186274), (121, 169340), (220, 93137), (242, 84670), (484, 42335), (605, 33868), (1210, 16934), (2420, 8467)]