258857480

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{449}}^1$

素因数の和:567

約数の個数: 128

約数和(自身を含む): 699840000

約数和(自身を除く): 440982520

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 29, 35, 40, 56, 58, 70, 71, 116, 140, 142, 145, 203, 232, 280, 284, 290, 355, 406, 449, 497, 568, 580, 710, 812, 898, 994, 1015, 1160, 1420, 1624, 1796, 1988, 2030, 2059, 2245, 2485, 2840, 3143, 3592, 3976, 4060, 4118, 4490, 4970, 6286, 8120, 8236, 8980, 9940, 10295, 12572, 13021, 14413, 15715, 16472, 17960, 19880, 20590, 25144, 26042, 28826, 31430, 31879, 41180, 52084, 57652, 62860, 63758, 65105, 72065, 82360, 91147, 104168, 115304, 125720, 127516, 130210, 144130, 159395, 182294, 223153, 255032, 260420, 288260, 318790, 364588, 446306, 455735, 520840, 576520, 637580, 729176, 892612, 911470, 924491, 1115765, 1275160, 1785224, 1822940, 1848982, 2231530, 3645880, 3697964, 4463060, 4622455, 6471437, 7395928, 8926120, 9244910, 12942874, 18489820, 25885748, 32357185, 36979640, 51771496, 64714370, 129428740, 258857480]

約数ペア:

[(1, 258857480), (2, 129428740), (4, 64714370), (5, 51771496), (7, 36979640), (8, 32357185), (10, 25885748), (14, 18489820), (20, 12942874), (28, 9244910), (29, 8926120), (35, 7395928), (40, 6471437), (56, 4622455), (58, 4463060), (70, 3697964), (71, 3645880), (116, 2231530), (140, 1848982), (142, 1822940), (145, 1785224), (203, 1275160), (232, 1115765), (280, 924491), (284, 911470), (290, 892612), (355, 729176), (406, 637580), (449, 576520), (497, 520840), (568, 455735), (580, 446306), (710, 364588), (812, 318790), (898, 288260), (994, 260420), (1015, 255032), (1160, 223153), (1420, 182294), (1624, 159395), (1796, 144130), (1988, 130210), (2030, 127516), (2059, 125720), (2245, 115304), (2485, 104168), (2840, 91147), (3143, 82360), (3592, 72065), (3976, 65105), (4060, 63758), (4118, 62860), (4490, 57652), (4970, 52084), (6286, 41180), (8120, 31879), (8236, 31430), (8980, 28826), (9940, 26042), (10295, 25144), (12572, 20590), (13021, 19880), (14413, 17960), (15715, 16472)]