19935555

素因数分解:

$3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{109}}^1\times {\mathrm{137}}^1$

素因数の和:343

約数の個数: 32

約数和(自身を含む): 32788800

約数和(自身を除く): 12853245

約数列:

[1, 3, 5, 15, 89, 109, 137, 267, 327, 411, 445, 545, 685, 1335, 1635, 2055, 9701, 12193, 14933, 29103, 36579, 44799, 48505, 60965, 74665, 145515, 182895, 223995, 1329037, 3987111, 6645185, 19935555]

約数ペア:

[(1, 19935555), (3, 6645185), (5, 3987111), (15, 1329037), (89, 223995), (109, 182895), (137, 145515), (267, 74665), (327, 60965), (411, 48505), (445, 44799), (545, 36579), (685, 29103), (1335, 14933), (1635, 12193), (2055, 9701)]