256860720

素因数分解:

$2^4\times 3^5\times 5^1\times {\mathrm{73}}^1\times {\mathrm{181}}^1$

素因数の和:282

約数の個数: 240

約数和(自身を含む): 911837472

約数和(自身を除く): 654976752

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 27, 30, 36, 40, 45, 48, 54, 60, 72, 73, 80, 81, 90, 108, 120, 135, 144, 146, 162, 180, 181, 216, 219, 240, 243, 270, 292, 324, 360, 362, 365, 405, 432, 438, 486, 540, 543, 584, 648, 657, 720, 724, 730, 810, 876, 905, 972, 1080, 1086, 1095, 1168, 1215, 1296, 1314, 1448, 1460, 1620, 1629, 1752, 1810, 1944, 1971, 2160, 2172, 2190, 2430, 2628, 2715, 2896, 2920, 3240, 3258, 3285, 3504, 3620, 3888, 3942, 4344, 4380, 4860, 4887, 5256, 5430, 5840, 5913, 6480, 6516, 6570, 7240, 7884, 8145, 8688, 8760, 9720, 9774, 9855, 10512, 10860, 11826, 13032, 13140, 13213, 14480, 14661, 15768, 16290, 17520, 17739, 19440, 19548, 19710, 21720, 23652, 24435, 26064, 26280, 26426, 29322, 29565, 31536, 32580, 35478, 39096, 39420, 39639, 43440, 43983, 47304, 48870, 52560, 52852, 58644, 59130, 65160, 66065, 70956, 73305, 78192, 78840, 79278, 87966, 88695, 94608, 97740, 105704, 117288, 118260, 118917, 130320, 132130, 141912, 146610, 157680, 158556, 175932, 177390, 195480, 198195, 211408, 219915, 234576, 236520, 237834, 264260, 283824, 293220, 317112, 351864, 354780, 356751, 390960, 396390, 439830, 473040, 475668, 528520, 586440, 594585, 634224, 703728, 709560, 713502, 792780, 879660, 951336, 1057040, 1070253, 1172880, 1189170, 1419120, 1427004, 1585560, 1759320, 1783755, 1902672, 2140506, 2378340, 2854008, 3171120, 3210759, 3518640, 3567510, 4281012, 4756680, 5351265, 5708016, 6421518, 7135020, 8562024, 9513360, 10702530, 12843036, 14270040, 16053795, 17124048, 21405060, 25686072, 28540080, 32107590, 42810120, 51372144, 64215180, 85620240, 128430360, 256860720]

約数ペア:

[(1, 256860720), (2, 128430360), (3, 85620240), (4, 64215180), (5, 51372144), (6, 42810120), (8, 32107590), (9, 28540080), (10, 25686072), (12, 21405060), (15, 17124048), (16, 16053795), (18, 14270040), (20, 12843036), (24, 10702530), (27, 9513360), (30, 8562024), (36, 7135020), (40, 6421518), (45, 5708016), (48, 5351265), (54, 4756680), (60, 4281012), (72, 3567510), (73, 3518640), (80, 3210759), (81, 3171120), (90, 2854008), (108, 2378340), (120, 2140506), (135, 1902672), (144, 1783755), (146, 1759320), (162, 1585560), (180, 1427004), (181, 1419120), (216, 1189170), (219, 1172880), (240, 1070253), (243, 1057040), (270, 951336), (292, 879660), (324, 792780), (360, 713502), (362, 709560), (365, 703728), (405, 634224), (432, 594585), (438, 586440), (486, 528520), (540, 475668), (543, 473040), (584, 439830), (648, 396390), (657, 390960), (720, 356751), (724, 354780), (730, 351864), (810, 317112), (876, 293220), (905, 283824), (972, 264260), (1080, 237834), (1086, 236520), (1095, 234576), (1168, 219915), (1215, 211408), (1296, 198195), (1314, 195480), (1448, 177390), (1460, 175932), (1620, 158556), (1629, 157680), (1752, 146610), (1810, 141912), (1944, 132130), (1971, 130320), (2160, 118917), (2172, 118260), (2190, 117288), (2430, 105704), (2628, 97740), (2715, 94608), (2896, 88695), (2920, 87966), (3240, 79278), (3258, 78840), (3285, 78192), (3504, 73305), (3620, 70956), (3888, 66065), (3942, 65160), (4344, 59130), (4380, 58644), (4860, 52852), (4887, 52560), (5256, 48870), (5430, 47304), (5840, 43983), (5913, 43440), (6480, 39639), (6516, 39420), (6570, 39096), (7240, 35478), (7884, 32580), (8145, 31536), (8688, 29565), (8760, 29322), (9720, 26426), (9774, 26280), (9855, 26064), (10512, 24435), (10860, 23652), (11826, 21720), (13032, 19710), (13140, 19548), (13213, 19440), (14480, 17739), (14661, 17520), (15768, 16290)]