491262720

素因数分解:

$2^8\times 3^1\times 5^1\times {\mathrm{13}}^2\times {\mathrm{757}}^1$

素因数の和:807

約数の個数: 216

約数和(自身を含む): 1701188496

約数和(自身を除く): 1209925776

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 120, 128, 130, 156, 160, 169, 192, 195, 208, 240, 256, 260, 312, 320, 338, 384, 390, 416, 480, 507, 520, 624, 640, 676, 757, 768, 780, 832, 845, 960, 1014, 1040, 1248, 1280, 1352, 1514, 1560, 1664, 1690, 1920, 2028, 2080, 2271, 2496, 2535, 2704, 3028, 3120, 3328, 3380, 3785, 3840, 4056, 4160, 4542, 4992, 5070, 5408, 6056, 6240, 6760, 7570, 8112, 8320, 9084, 9841, 9984, 10140, 10816, 11355, 12112, 12480, 13520, 15140, 16224, 16640, 18168, 19682, 20280, 21632, 22710, 24224, 24960, 27040, 29523, 30280, 32448, 36336, 39364, 40560, 43264, 45420, 48448, 49205, 49920, 54080, 59046, 60560, 64896, 72672, 78728, 81120, 90840, 96896, 98410, 108160, 118092, 121120, 127933, 129792, 145344, 147615, 157456, 162240, 181680, 193792, 196820, 216320, 236184, 242240, 255866, 290688, 295230, 314912, 324480, 363360, 383799, 393640, 472368, 484480, 511732, 581376, 590460, 629824, 639665, 648960, 726720, 767598, 787280, 944736, 968960, 1023464, 1180920, 1259648, 1279330, 1453440, 1535196, 1574560, 1889472, 1918995, 2046928, 2361840, 2519296, 2558660, 2906880, 3070392, 3149120, 3778944, 3837990, 4093856, 4723680, 5117320, 6140784, 6298240, 7557888, 7675980, 8187712, 9447360, 10234640, 12281568, 12596480, 15351960, 16375424, 18894720, 20469280, 24563136, 30703920, 32750848, 37789440, 40938560, 49126272, 61407840, 81877120, 98252544, 122815680, 163754240, 245631360, 491262720]

約数ペア:

[(1, 491262720), (2, 245631360), (3, 163754240), (4, 122815680), (5, 98252544), (6, 81877120), (8, 61407840), (10, 49126272), (12, 40938560), (13, 37789440), (15, 32750848), (16, 30703920), (20, 24563136), (24, 20469280), (26, 18894720), (30, 16375424), (32, 15351960), (39, 12596480), (40, 12281568), (48, 10234640), (52, 9447360), (60, 8187712), (64, 7675980), (65, 7557888), (78, 6298240), (80, 6140784), (96, 5117320), (104, 4723680), (120, 4093856), (128, 3837990), (130, 3778944), (156, 3149120), (160, 3070392), (169, 2906880), (192, 2558660), (195, 2519296), (208, 2361840), (240, 2046928), (256, 1918995), (260, 1889472), (312, 1574560), (320, 1535196), (338, 1453440), (384, 1279330), (390, 1259648), (416, 1180920), (480, 1023464), (507, 968960), (520, 944736), (624, 787280), (640, 767598), (676, 726720), (757, 648960), (768, 639665), (780, 629824), (832, 590460), (845, 581376), (960, 511732), (1014, 484480), (1040, 472368), (1248, 393640), (1280, 383799), (1352, 363360), (1514, 324480), (1560, 314912), (1664, 295230), (1690, 290688), (1920, 255866), (2028, 242240), (2080, 236184), (2271, 216320), (2496, 196820), (2535, 193792), (2704, 181680), (3028, 162240), (3120, 157456), (3328, 147615), (3380, 145344), (3785, 129792), (3840, 127933), (4056, 121120), (4160, 118092), (4542, 108160), (4992, 98410), (5070, 96896), (5408, 90840), (6056, 81120), (6240, 78728), (6760, 72672), (7570, 64896), (8112, 60560), (8320, 59046), (9084, 54080), (9841, 49920), (9984, 49205), (10140, 48448), (10816, 45420), (11355, 43264), (12112, 40560), (12480, 39364), (13520, 36336), (15140, 32448), (16224, 30280), (16640, 29523), (18168, 27040), (19682, 24960), (20280, 24224), (21632, 22710)]