20742788

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{17}}^1\times {\mathrm{2521}}^1$

素因数の和:2564

約数の個数: 36

約数和(自身を含む): 42263676

約数和(自身を除く): 21520888

約数列:

[1, 2, 4, 11, 17, 22, 34, 44, 68, 121, 187, 242, 374, 484, 748, 2057, 2521, 4114, 5042, 8228, 10084, 27731, 42857, 55462, 85714, 110924, 171428, 305041, 471427, 610082, 942854, 1220164, 1885708, 5185697, 10371394, 20742788]

約数ペア:

[(1, 20742788), (2, 10371394), (4, 5185697), (11, 1885708), (17, 1220164), (22, 942854), (34, 610082), (44, 471427), (68, 305041), (121, 171428), (187, 110924), (242, 85714), (374, 55462), (484, 42857), (748, 27731), (2057, 10084), (2521, 8228), (4114, 5042)]