20000400

素因数分解:

$2^4\times 3^1\times 5^2\times 7^1\times {\mathrm{2381}}^1$

素因数の和:2409

約数の個数: 120

約数和(自身を含む): 73251264

約数和(自身を除く): 53250864

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 25, 28, 30, 35, 40, 42, 48, 50, 56, 60, 70, 75, 80, 84, 100, 105, 112, 120, 140, 150, 168, 175, 200, 210, 240, 280, 300, 336, 350, 400, 420, 525, 560, 600, 700, 840, 1050, 1200, 1400, 1680, 2100, 2381, 2800, 4200, 4762, 7143, 8400, 9524, 11905, 14286, 16667, 19048, 23810, 28572, 33334, 35715, 38096, 47620, 50001, 57144, 59525, 66668, 71430, 83335, 95240, 100002, 114288, 119050, 133336, 142860, 166670, 178575, 190480, 200004, 238100, 250005, 266672, 285720, 333340, 357150, 400008, 416675, 476200, 500010, 571440, 666680, 714300, 800016, 833350, 952400, 1000020, 1250025, 1333360, 1428600, 1666700, 2000040, 2500050, 2857200, 3333400, 4000080, 5000100, 6666800, 10000200, 20000400]

約数ペア:

[(1, 20000400), (2, 10000200), (3, 6666800), (4, 5000100), (5, 4000080), (6, 3333400), (7, 2857200), (8, 2500050), (10, 2000040), (12, 1666700), (14, 1428600), (15, 1333360), (16, 1250025), (20, 1000020), (21, 952400), (24, 833350), (25, 800016), (28, 714300), (30, 666680), (35, 571440), (40, 500010), (42, 476200), (48, 416675), (50, 400008), (56, 357150), (60, 333340), (70, 285720), (75, 266672), (80, 250005), (84, 238100), (100, 200004), (105, 190480), (112, 178575), (120, 166670), (140, 142860), (150, 133336), (168, 119050), (175, 114288), (200, 100002), (210, 95240), (240, 83335), (280, 71430), (300, 66668), (336, 59525), (350, 57144), (400, 50001), (420, 47620), (525, 38096), (560, 35715), (600, 33334), (700, 28572), (840, 23810), (1050, 19048), (1200, 16667), (1400, 14286), (1680, 11905), (2100, 9524), (2381, 8400), (2800, 7143), (4200, 4762)]