257416560

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{607}}^1$

素因数の和:676

約数の個数: 240

約数和(自身を含む): 940892160

約数和(自身を除く): 683475600

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 19, 20, 24, 30, 31, 36, 38, 40, 45, 48, 57, 60, 62, 72, 76, 80, 90, 93, 95, 114, 120, 124, 144, 152, 155, 171, 180, 186, 190, 228, 240, 248, 279, 285, 304, 310, 342, 360, 372, 380, 456, 465, 496, 558, 570, 589, 607, 620, 684, 720, 744, 760, 855, 912, 930, 1116, 1140, 1178, 1214, 1240, 1368, 1395, 1488, 1520, 1710, 1767, 1821, 1860, 2232, 2280, 2356, 2428, 2480, 2736, 2790, 2945, 3035, 3420, 3534, 3642, 3720, 4464, 4560, 4712, 4856, 5301, 5463, 5580, 5890, 6070, 6840, 7068, 7284, 7440, 8835, 9105, 9424, 9712, 10602, 10926, 11160, 11533, 11780, 12140, 13680, 14136, 14568, 17670, 18210, 18817, 21204, 21852, 22320, 23066, 23560, 24280, 26505, 27315, 28272, 29136, 34599, 35340, 36420, 37634, 42408, 43704, 46132, 47120, 48560, 53010, 54630, 56451, 57665, 69198, 70680, 72840, 75268, 84816, 87408, 92264, 94085, 103797, 106020, 109260, 112902, 115330, 138396, 141360, 145680, 150536, 169353, 172995, 184528, 188170, 207594, 212040, 218520, 225804, 230660, 276792, 282255, 301072, 338706, 345990, 357523, 376340, 415188, 424080, 437040, 451608, 461320, 518985, 553584, 564510, 677412, 691980, 715046, 752680, 830376, 846765, 903216, 922640, 1037970, 1072569, 1129020, 1354824, 1383960, 1430092, 1505360, 1660752, 1693530, 1787615, 2075940, 2145138, 2258040, 2709648, 2767920, 2860184, 3217707, 3387060, 3575230, 4151880, 4290276, 4516080, 5362845, 5720368, 6435414, 6774120, 7150460, 8303760, 8580552, 10725690, 12870828, 13548240, 14300920, 16088535, 17161104, 21451380, 25741656, 28601840, 32177070, 42902760, 51483312, 64354140, 85805520, 128708280, 257416560]

約数ペア:

[(1, 257416560), (2, 128708280), (3, 85805520), (4, 64354140), (5, 51483312), (6, 42902760), (8, 32177070), (9, 28601840), (10, 25741656), (12, 21451380), (15, 17161104), (16, 16088535), (18, 14300920), (19, 13548240), (20, 12870828), (24, 10725690), (30, 8580552), (31, 8303760), (36, 7150460), (38, 6774120), (40, 6435414), (45, 5720368), (48, 5362845), (57, 4516080), (60, 4290276), (62, 4151880), (72, 3575230), (76, 3387060), (80, 3217707), (90, 2860184), (93, 2767920), (95, 2709648), (114, 2258040), (120, 2145138), (124, 2075940), (144, 1787615), (152, 1693530), (155, 1660752), (171, 1505360), (180, 1430092), (186, 1383960), (190, 1354824), (228, 1129020), (240, 1072569), (248, 1037970), (279, 922640), (285, 903216), (304, 846765), (310, 830376), (342, 752680), (360, 715046), (372, 691980), (380, 677412), (456, 564510), (465, 553584), (496, 518985), (558, 461320), (570, 451608), (589, 437040), (607, 424080), (620, 415188), (684, 376340), (720, 357523), (744, 345990), (760, 338706), (855, 301072), (912, 282255), (930, 276792), (1116, 230660), (1140, 225804), (1178, 218520), (1214, 212040), (1240, 207594), (1368, 188170), (1395, 184528), (1488, 172995), (1520, 169353), (1710, 150536), (1767, 145680), (1821, 141360), (1860, 138396), (2232, 115330), (2280, 112902), (2356, 109260), (2428, 106020), (2480, 103797), (2736, 94085), (2790, 92264), (2945, 87408), (3035, 84816), (3420, 75268), (3534, 72840), (3642, 70680), (3720, 69198), (4464, 57665), (4560, 56451), (4712, 54630), (4856, 53010), (5301, 48560), (5463, 47120), (5580, 46132), (5890, 43704), (6070, 42408), (6840, 37634), (7068, 36420), (7284, 35340), (7440, 34599), (8835, 29136), (9105, 28272), (9424, 27315), (9712, 26505), (10602, 24280), (10926, 23560), (11160, 23066), (11533, 22320), (11780, 21852), (12140, 21204), (13680, 18817), (14136, 18210), (14568, 17670)]