20215784

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{79}}^1\times {\mathrm{1103}}^1$

素因数の和:1217

約数の個数: 32

約数和(自身を含む): 39744000

約数和(自身を除く): 19528216

約数列:

[1, 2, 4, 8, 29, 58, 79, 116, 158, 232, 316, 632, 1103, 2206, 2291, 4412, 4582, 8824, 9164, 18328, 31987, 63974, 87137, 127948, 174274, 255896, 348548, 697096, 2526973, 5053946, 10107892, 20215784]

約数ペア:

[(1, 20215784), (2, 10107892), (4, 5053946), (8, 2526973), (29, 697096), (58, 348548), (79, 255896), (116, 174274), (158, 127948), (232, 87137), (316, 63974), (632, 31987), (1103, 18328), (2206, 9164), (2291, 8824), (4412, 4582)]