20158875

素因数分解:

$3^4\times 5^3\times {\mathrm{11}}^1\times {\mathrm{181}}^1$

素因数の和:219

約数の個数: 80

約数和(自身を含む): 41225184

約数和(自身を除く): 21066309

約数列:

[1, 3, 5, 9, 11, 15, 25, 27, 33, 45, 55, 75, 81, 99, 125, 135, 165, 181, 225, 275, 297, 375, 405, 495, 543, 675, 825, 891, 905, 1125, 1375, 1485, 1629, 1991, 2025, 2475, 2715, 3375, 4125, 4455, 4525, 4887, 5973, 7425, 8145, 9955, 10125, 12375, 13575, 14661, 17919, 22275, 22625, 24435, 29865, 37125, 40725, 49775, 53757, 67875, 73305, 89595, 111375, 122175, 149325, 161271, 203625, 248875, 268785, 366525, 447975, 610875, 746625, 806355, 1343925, 1832625, 2239875, 4031775, 6719625, 20158875]

約数ペア:

[(1, 20158875), (3, 6719625), (5, 4031775), (9, 2239875), (11, 1832625), (15, 1343925), (25, 806355), (27, 746625), (33, 610875), (45, 447975), (55, 366525), (75, 268785), (81, 248875), (99, 203625), (125, 161271), (135, 149325), (165, 122175), (181, 111375), (225, 89595), (275, 73305), (297, 67875), (375, 53757), (405, 49775), (495, 40725), (543, 37125), (675, 29865), (825, 24435), (891, 22625), (905, 22275), (1125, 17919), (1375, 14661), (1485, 13575), (1629, 12375), (1991, 10125), (2025, 9955), (2475, 8145), (2715, 7425), (3375, 5973), (4125, 4887), (4455, 4525)]