20018880

素因数分解:

$2^6\times 3^3\times 5^1\times 7^1\times {\mathrm{331}}^1$

素因数の和:364

約数の個数: 224

約数和(自身を含む): 80954880

約数和(自身を除く): 60936000

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, 135, 140, 144, 160, 168, 180, 189, 192, 210, 216, 224, 240, 252, 270, 280, 288, 315, 320, 331, 336, 360, 378, 420, 432, 448, 480, 504, 540, 560, 576, 630, 662, 672, 720, 756, 840, 864, 945, 960, 993, 1008, 1080, 1120, 1260, 1324, 1344, 1440, 1512, 1655, 1680, 1728, 1890, 1986, 2016, 2160, 2240, 2317, 2520, 2648, 2880, 2979, 3024, 3310, 3360, 3780, 3972, 4032, 4320, 4634, 4965, 5040, 5296, 5958, 6048, 6620, 6720, 6951, 7560, 7944, 8640, 8937, 9268, 9930, 10080, 10592, 11585, 11916, 12096, 13240, 13902, 14895, 15120, 15888, 17874, 18536, 19860, 20160, 20853, 21184, 23170, 23832, 26480, 27804, 29790, 30240, 31776, 34755, 35748, 37072, 39720, 41706, 44685, 46340, 47664, 52960, 55608, 59580, 60480, 62559, 63552, 69510, 71496, 74144, 79440, 83412, 89370, 92680, 95328, 104265, 105920, 111216, 119160, 125118, 139020, 142992, 148288, 158880, 166824, 178740, 185360, 190656, 208530, 222432, 238320, 250236, 278040, 285984, 312795, 317760, 333648, 357480, 370720, 417060, 444864, 476640, 500472, 556080, 571968, 625590, 667296, 714960, 741440, 834120, 953280, 1000944, 1112160, 1251180, 1334592, 1429920, 1668240, 2001888, 2224320, 2502360, 2859840, 3336480, 4003776, 5004720, 6672960, 10009440, 20018880]

約数ペア:

[(1, 20018880), (2, 10009440), (3, 6672960), (4, 5004720), (5, 4003776), (6, 3336480), (7, 2859840), (8, 2502360), (9, 2224320), (10, 2001888), (12, 1668240), (14, 1429920), (15, 1334592), (16, 1251180), (18, 1112160), (20, 1000944), (21, 953280), (24, 834120), (27, 741440), (28, 714960), (30, 667296), (32, 625590), (35, 571968), (36, 556080), (40, 500472), (42, 476640), (45, 444864), (48, 417060), (54, 370720), (56, 357480), (60, 333648), (63, 317760), (64, 312795), (70, 285984), (72, 278040), (80, 250236), (84, 238320), (90, 222432), (96, 208530), (105, 190656), (108, 185360), (112, 178740), (120, 166824), (126, 158880), (135, 148288), (140, 142992), (144, 139020), (160, 125118), (168, 119160), (180, 111216), (189, 105920), (192, 104265), (210, 95328), (216, 92680), (224, 89370), (240, 83412), (252, 79440), (270, 74144), (280, 71496), (288, 69510), (315, 63552), (320, 62559), (331, 60480), (336, 59580), (360, 55608), (378, 52960), (420, 47664), (432, 46340), (448, 44685), (480, 41706), (504, 39720), (540, 37072), (560, 35748), (576, 34755), (630, 31776), (662, 30240), (672, 29790), (720, 27804), (756, 26480), (840, 23832), (864, 23170), (945, 21184), (960, 20853), (993, 20160), (1008, 19860), (1080, 18536), (1120, 17874), (1260, 15888), (1324, 15120), (1344, 14895), (1440, 13902), (1512, 13240), (1655, 12096), (1680, 11916), (1728, 11585), (1890, 10592), (1986, 10080), (2016, 9930), (2160, 9268), (2240, 8937), (2317, 8640), (2520, 7944), (2648, 7560), (2880, 6951), (2979, 6720), (3024, 6620), (3310, 6048), (3360, 5958), (3780, 5296), (3972, 5040), (4032, 4965), (4320, 4634)]