20991592

素因数分解:

$2^3\times {\mathrm{29}}^1\times {\mathrm{90481}}^1$

素因数の和:90516

約数の個数: 16

約数和(自身を含む): 40716900

約数和(自身を除く): 19725308

約数列:

[1, 2, 4, 8, 29, 58, 116, 232, 90481, 180962, 361924, 723848, 2623949, 5247898, 10495796, 20991592]

約数ペア:

[(1, 20991592), (2, 10495796), (4, 5247898), (8, 2623949), (29, 723848), (58, 361924), (116, 180962), (232, 90481)]