256170240

素因数分解:

$2^8\times 3^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{601}}^1$

素因数の和:665

約数の個数: 216

約数和(自身を含む): 911791608

約数和(自身を除く): 655621368

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 37, 40, 45, 48, 60, 64, 72, 74, 80, 90, 96, 111, 120, 128, 144, 148, 160, 180, 185, 192, 222, 240, 256, 288, 296, 320, 333, 360, 370, 384, 444, 480, 555, 576, 592, 601, 640, 666, 720, 740, 768, 888, 960, 1110, 1152, 1184, 1202, 1280, 1332, 1440, 1480, 1665, 1776, 1803, 1920, 2220, 2304, 2368, 2404, 2664, 2880, 2960, 3005, 3330, 3552, 3606, 3840, 4440, 4736, 4808, 5328, 5409, 5760, 5920, 6010, 6660, 7104, 7212, 8880, 9015, 9472, 9616, 10656, 10818, 11520, 11840, 12020, 13320, 14208, 14424, 17760, 18030, 19232, 21312, 21636, 22237, 23680, 24040, 26640, 27045, 28416, 28848, 35520, 36060, 38464, 42624, 43272, 44474, 47360, 48080, 53280, 54090, 57696, 66711, 71040, 72120, 76928, 85248, 86544, 88948, 96160, 106560, 108180, 111185, 115392, 133422, 142080, 144240, 153856, 173088, 177896, 192320, 200133, 213120, 216360, 222370, 230784, 266844, 288480, 333555, 346176, 355792, 384640, 400266, 426240, 432720, 444740, 461568, 533688, 576960, 667110, 692352, 711584, 769280, 800532, 865440, 889480, 1000665, 1067376, 1153920, 1334220, 1384704, 1423168, 1601064, 1730880, 1778960, 2001330, 2134752, 2307840, 2668440, 2846336, 3202128, 3461760, 3557920, 4002660, 4269504, 5336880, 5692672, 6404256, 6923520, 7115840, 8005320, 8539008, 10673760, 12808512, 14231680, 16010640, 17078016, 21347520, 25617024, 28463360, 32021280, 42695040, 51234048, 64042560, 85390080, 128085120, 256170240]

約数ペア:

[(1, 256170240), (2, 128085120), (3, 85390080), (4, 64042560), (5, 51234048), (6, 42695040), (8, 32021280), (9, 28463360), (10, 25617024), (12, 21347520), (15, 17078016), (16, 16010640), (18, 14231680), (20, 12808512), (24, 10673760), (30, 8539008), (32, 8005320), (36, 7115840), (37, 6923520), (40, 6404256), (45, 5692672), (48, 5336880), (60, 4269504), (64, 4002660), (72, 3557920), (74, 3461760), (80, 3202128), (90, 2846336), (96, 2668440), (111, 2307840), (120, 2134752), (128, 2001330), (144, 1778960), (148, 1730880), (160, 1601064), (180, 1423168), (185, 1384704), (192, 1334220), (222, 1153920), (240, 1067376), (256, 1000665), (288, 889480), (296, 865440), (320, 800532), (333, 769280), (360, 711584), (370, 692352), (384, 667110), (444, 576960), (480, 533688), (555, 461568), (576, 444740), (592, 432720), (601, 426240), (640, 400266), (666, 384640), (720, 355792), (740, 346176), (768, 333555), (888, 288480), (960, 266844), (1110, 230784), (1152, 222370), (1184, 216360), (1202, 213120), (1280, 200133), (1332, 192320), (1440, 177896), (1480, 173088), (1665, 153856), (1776, 144240), (1803, 142080), (1920, 133422), (2220, 115392), (2304, 111185), (2368, 108180), (2404, 106560), (2664, 96160), (2880, 88948), (2960, 86544), (3005, 85248), (3330, 76928), (3552, 72120), (3606, 71040), (3840, 66711), (4440, 57696), (4736, 54090), (4808, 53280), (5328, 48080), (5409, 47360), (5760, 44474), (5920, 43272), (6010, 42624), (6660, 38464), (7104, 36060), (7212, 35520), (8880, 28848), (9015, 28416), (9472, 27045), (9616, 26640), (10656, 24040), (10818, 23680), (11520, 22237), (11840, 21636), (12020, 21312), (13320, 19232), (14208, 18030), (14424, 17760)]