81889920

素因数分解:

$2^7\times 3^3\times 5^1\times 7^1\times {\mathrm{677}}^1$

素因数の和:712

約数の個数: 256

約数和(自身を含む): 331948800

約数和(自身を除く): 250058880

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 24, 27, 28, 30, 32, 35, 36, 40, 42, 45, 48, 54, 56, 60, 63, 64, 70, 72, 80, 84, 90, 96, 105, 108, 112, 120, 126, 128, 135, 140, 144, 160, 168, 180, 189, 192, 210, 216, 224, 240, 252, 270, 280, 288, 315, 320, 336, 360, 378, 384, 420, 432, 448, 480, 504, 540, 560, 576, 630, 640, 672, 677, 720, 756, 840, 864, 896, 945, 960, 1008, 1080, 1120, 1152, 1260, 1344, 1354, 1440, 1512, 1680, 1728, 1890, 1920, 2016, 2031, 2160, 2240, 2520, 2688, 2708, 2880, 3024, 3360, 3385, 3456, 3780, 4032, 4062, 4320, 4480, 4739, 5040, 5416, 5760, 6048, 6093, 6720, 6770, 7560, 8064, 8124, 8640, 9478, 10080, 10155, 10832, 12096, 12186, 13440, 13540, 14217, 15120, 16248, 17280, 18279, 18956, 20160, 20310, 21664, 23695, 24192, 24372, 27080, 28434, 30240, 30465, 32496, 36558, 37912, 40320, 40620, 42651, 43328, 47390, 48744, 54160, 56868, 60480, 60930, 64992, 71085, 73116, 75824, 81240, 85302, 86656, 91395, 94780, 97488, 108320, 113736, 120960, 121860, 127953, 129984, 142170, 146232, 151648, 162480, 170604, 182790, 189560, 194976, 213255, 216640, 227472, 243720, 255906, 259968, 284340, 292464, 303296, 324960, 341208, 365580, 379120, 389952, 426510, 433280, 454944, 487440, 511812, 568680, 584928, 606592, 639765, 649920, 682416, 731160, 758240, 779904, 853020, 909888, 974880, 1023624, 1137360, 1169856, 1279530, 1299840, 1364832, 1462320, 1516480, 1706040, 1819776, 1949760, 2047248, 2274720, 2339712, 2559060, 2729664, 2924640, 3032960, 3412080, 3899520, 4094496, 4549440, 5118120, 5459328, 5849280, 6824160, 8188992, 9098880, 10236240, 11698560, 13648320, 16377984, 20472480, 27296640, 40944960, 81889920]

約数ペア:

[(1, 81889920), (2, 40944960), (3, 27296640), (4, 20472480), (5, 16377984), (6, 13648320), (7, 11698560), (8, 10236240), (9, 9098880), (10, 8188992), (12, 6824160), (14, 5849280), (15, 5459328), (16, 5118120), (18, 4549440), (20, 4094496), (21, 3899520), (24, 3412080), (27, 3032960), (28, 2924640), (30, 2729664), (32, 2559060), (35, 2339712), (36, 2274720), (40, 2047248), (42, 1949760), (45, 1819776), (48, 1706040), (54, 1516480), (56, 1462320), (60, 1364832), (63, 1299840), (64, 1279530), (70, 1169856), (72, 1137360), (80, 1023624), (84, 974880), (90, 909888), (96, 853020), (105, 779904), (108, 758240), (112, 731160), (120, 682416), (126, 649920), (128, 639765), (135, 606592), (140, 584928), (144, 568680), (160, 511812), (168, 487440), (180, 454944), (189, 433280), (192, 426510), (210, 389952), (216, 379120), (224, 365580), (240, 341208), (252, 324960), (270, 303296), (280, 292464), (288, 284340), (315, 259968), (320, 255906), (336, 243720), (360, 227472), (378, 216640), (384, 213255), (420, 194976), (432, 189560), (448, 182790), (480, 170604), (504, 162480), (540, 151648), (560, 146232), (576, 142170), (630, 129984), (640, 127953), (672, 121860), (677, 120960), (720, 113736), (756, 108320), (840, 97488), (864, 94780), (896, 91395), (945, 86656), (960, 85302), (1008, 81240), (1080, 75824), (1120, 73116), (1152, 71085), (1260, 64992), (1344, 60930), (1354, 60480), (1440, 56868), (1512, 54160), (1680, 48744), (1728, 47390), (1890, 43328), (1920, 42651), (2016, 40620), (2031, 40320), (2160, 37912), (2240, 36558), (2520, 32496), (2688, 30465), (2708, 30240), (2880, 28434), (3024, 27080), (3360, 24372), (3385, 24192), (3456, 23695), (3780, 21664), (4032, 20310), (4062, 20160), (4320, 18956), (4480, 18279), (4739, 17280), (5040, 16248), (5416, 15120), (5760, 14217), (6048, 13540), (6093, 13440), (6720, 12186), (6770, 12096), (7560, 10832), (8064, 10155), (8124, 10080), (8640, 9478)]