19870293575

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{149}}^1\times {\mathrm{25523}}^1$

素因数の和:25712

約数の個数: 48

約数和(自身を含む): 28484784000

約数和(自身を除く): 8614490425

約数列:

[1, 5, 11, 19, 25, 55, 95, 149, 209, 275, 475, 745, 1045, 1639, 2831, 3725, 5225, 8195, 14155, 25523, 31141, 40975, 70775, 127615, 155705, 280753, 484937, 638075, 778525, 1403765, 2424685, 3802927, 5334307, 7018825, 12123425, 19014635, 26671535, 41832197, 72255613, 95073175, 133357675, 209160985, 361278065, 794811743, 1045804925, 1806390325, 3974058715, 19870293575]

約数ペア:

[(1, 19870293575), (5, 3974058715), (11, 1806390325), (19, 1045804925), (25, 794811743), (55, 361278065), (95, 209160985), (149, 133357675), (209, 95073175), (275, 72255613), (475, 41832197), (745, 26671535), (1045, 19014635), (1639, 12123425), (2831, 7018825), (3725, 5334307), (5225, 3802927), (8195, 2424685), (14155, 1403765), (25523, 778525), (31141, 638075), (40975, 484937), (70775, 280753), (127615, 155705)]