20894775

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1$

素因数の和:117

約数の個数: 96

約数和(自身を含む): 41902080

約数和(自身を除く): 21007305

約数列:

[1, 3, 5, 11, 15, 19, 25, 31, 33, 43, 55, 57, 75, 93, 95, 129, 155, 165, 209, 215, 275, 285, 341, 465, 473, 475, 589, 627, 645, 775, 817, 825, 1023, 1045, 1075, 1333, 1419, 1425, 1705, 1767, 2325, 2365, 2451, 2945, 3135, 3225, 3999, 4085, 5115, 5225, 6479, 6665, 7095, 8525, 8835, 8987, 11825, 12255, 14663, 14725, 15675, 19437, 19995, 20425, 25327, 25575, 26961, 32395, 33325, 35475, 43989, 44175, 44935, 61275, 73315, 75981, 97185, 99975, 126635, 134805, 161975, 219945, 224675, 278597, 366575, 379905, 485925, 633175, 674025, 835791, 1099725, 1392985, 1899525, 4178955, 6964925, 20894775]

約数ペア:

[(1, 20894775), (3, 6964925), (5, 4178955), (11, 1899525), (15, 1392985), (19, 1099725), (25, 835791), (31, 674025), (33, 633175), (43, 485925), (55, 379905), (57, 366575), (75, 278597), (93, 224675), (95, 219945), (129, 161975), (155, 134805), (165, 126635), (209, 99975), (215, 97185), (275, 75981), (285, 73315), (341, 61275), (465, 44935), (473, 44175), (475, 43989), (589, 35475), (627, 33325), (645, 32395), (775, 26961), (817, 25575), (825, 25327), (1023, 20425), (1045, 19995), (1075, 19437), (1333, 15675), (1419, 14725), (1425, 14663), (1705, 12255), (1767, 11825), (2325, 8987), (2365, 8835), (2451, 8525), (2945, 7095), (3135, 6665), (3225, 6479), (3999, 5225), (4085, 5115)]