256729680

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{419}}^1$

素因数の和:498

約数の個数: 240

約数和(自身を含む): 926190720

約数和(自身を除く): 669461040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 36, 37, 40, 45, 46, 48, 60, 69, 72, 74, 80, 90, 92, 111, 115, 120, 138, 144, 148, 180, 184, 185, 207, 222, 230, 240, 276, 296, 333, 345, 360, 368, 370, 414, 419, 444, 460, 552, 555, 592, 666, 690, 720, 740, 828, 838, 851, 888, 920, 1035, 1104, 1110, 1257, 1332, 1380, 1480, 1656, 1665, 1676, 1702, 1776, 1840, 2070, 2095, 2220, 2514, 2553, 2664, 2760, 2960, 3312, 3330, 3352, 3404, 3771, 4140, 4190, 4255, 4440, 5028, 5106, 5328, 5520, 6285, 6660, 6704, 6808, 7542, 7659, 8280, 8380, 8510, 8880, 9637, 10056, 10212, 12570, 12765, 13320, 13616, 15084, 15318, 15503, 16560, 16760, 17020, 18855, 19274, 20112, 20424, 25140, 25530, 26640, 28911, 30168, 30636, 31006, 33520, 34040, 37710, 38295, 38548, 40848, 46509, 48185, 50280, 51060, 57822, 60336, 61272, 62012, 68080, 75420, 76590, 77096, 77515, 86733, 93018, 96370, 100560, 102120, 115644, 122544, 124024, 139527, 144555, 150840, 153180, 154192, 155030, 173466, 186036, 192740, 204240, 231288, 232545, 248048, 279054, 289110, 301680, 306360, 310060, 346932, 356569, 372072, 385480, 433665, 462576, 465090, 558108, 578220, 612720, 620120, 693864, 697635, 713138, 744144, 770960, 867330, 930180, 1069707, 1116216, 1156440, 1240240, 1387728, 1395270, 1426276, 1734660, 1782845, 1860360, 2139414, 2232432, 2312880, 2790540, 2852552, 3209121, 3469320, 3565690, 3720720, 4278828, 5348535, 5581080, 5705104, 6418242, 6938640, 7131380, 8557656, 10697070, 11162160, 12836484, 14262760, 16045605, 17115312, 21394140, 25672968, 28525520, 32091210, 42788280, 51345936, 64182420, 85576560, 128364840, 256729680]

約数ペア:

[(1, 256729680), (2, 128364840), (3, 85576560), (4, 64182420), (5, 51345936), (6, 42788280), (8, 32091210), (9, 28525520), (10, 25672968), (12, 21394140), (15, 17115312), (16, 16045605), (18, 14262760), (20, 12836484), (23, 11162160), (24, 10697070), (30, 8557656), (36, 7131380), (37, 6938640), (40, 6418242), (45, 5705104), (46, 5581080), (48, 5348535), (60, 4278828), (69, 3720720), (72, 3565690), (74, 3469320), (80, 3209121), (90, 2852552), (92, 2790540), (111, 2312880), (115, 2232432), (120, 2139414), (138, 1860360), (144, 1782845), (148, 1734660), (180, 1426276), (184, 1395270), (185, 1387728), (207, 1240240), (222, 1156440), (230, 1116216), (240, 1069707), (276, 930180), (296, 867330), (333, 770960), (345, 744144), (360, 713138), (368, 697635), (370, 693864), (414, 620120), (419, 612720), (444, 578220), (460, 558108), (552, 465090), (555, 462576), (592, 433665), (666, 385480), (690, 372072), (720, 356569), (740, 346932), (828, 310060), (838, 306360), (851, 301680), (888, 289110), (920, 279054), (1035, 248048), (1104, 232545), (1110, 231288), (1257, 204240), (1332, 192740), (1380, 186036), (1480, 173466), (1656, 155030), (1665, 154192), (1676, 153180), (1702, 150840), (1776, 144555), (1840, 139527), (2070, 124024), (2095, 122544), (2220, 115644), (2514, 102120), (2553, 100560), (2664, 96370), (2760, 93018), (2960, 86733), (3312, 77515), (3330, 77096), (3352, 76590), (3404, 75420), (3771, 68080), (4140, 62012), (4190, 61272), (4255, 60336), (4440, 57822), (5028, 51060), (5106, 50280), (5328, 48185), (5520, 46509), (6285, 40848), (6660, 38548), (6704, 38295), (6808, 37710), (7542, 34040), (7659, 33520), (8280, 31006), (8380, 30636), (8510, 30168), (8880, 28911), (9637, 26640), (10056, 25530), (10212, 25140), (12570, 20424), (12765, 20112), (13320, 19274), (13616, 18855), (15084, 17020), (15318, 16760), (15503, 16560)]