20138510

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{563}}^1$

素因数の和:657

約数の個数: 48

約数和(自身を含む): 42821136

約数和(自身を除く): 22682626

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 73, 98, 146, 245, 365, 490, 511, 563, 730, 1022, 1126, 2555, 2815, 3577, 3941, 5110, 5630, 7154, 7882, 17885, 19705, 27587, 35770, 39410, 41099, 55174, 82198, 137935, 205495, 275870, 287693, 410990, 575386, 1438465, 2013851, 2876930, 4027702, 10069255, 20138510]

約数ペア:

[(1, 20138510), (2, 10069255), (5, 4027702), (7, 2876930), (10, 2013851), (14, 1438465), (35, 575386), (49, 410990), (70, 287693), (73, 275870), (98, 205495), (146, 137935), (245, 82198), (365, 55174), (490, 41099), (511, 39410), (563, 35770), (730, 27587), (1022, 19705), (1126, 17885), (2555, 7882), (2815, 7154), (3577, 5630), (3941, 5110)]