21052440

素因数分解:

$2^3\times 3^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{193}}^1$

素因数の和:314

約数の個数: 128

約数和(自身を含む): 71236800

約数和(自身を除く): 50184360

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 90, 101, 108, 120, 135, 180, 193, 202, 216, 270, 303, 360, 386, 404, 505, 540, 579, 606, 772, 808, 909, 965, 1010, 1080, 1158, 1212, 1515, 1544, 1737, 1818, 1930, 2020, 2316, 2424, 2727, 2895, 3030, 3474, 3636, 3860, 4040, 4545, 4632, 5211, 5454, 5790, 6060, 6948, 7272, 7720, 8685, 9090, 10422, 10908, 11580, 12120, 13635, 13896, 17370, 18180, 19493, 20844, 21816, 23160, 26055, 27270, 34740, 36360, 38986, 41688, 52110, 54540, 58479, 69480, 77972, 97465, 104220, 109080, 116958, 155944, 175437, 194930, 208440, 233916, 292395, 350874, 389860, 467832, 526311, 584790, 701748, 779720, 877185, 1052622, 1169580, 1403496, 1754370, 2105244, 2339160, 2631555, 3508740, 4210488, 5263110, 7017480, 10526220, 21052440]

約数ペア:

[(1, 21052440), (2, 10526220), (3, 7017480), (4, 5263110), (5, 4210488), (6, 3508740), (8, 2631555), (9, 2339160), (10, 2105244), (12, 1754370), (15, 1403496), (18, 1169580), (20, 1052622), (24, 877185), (27, 779720), (30, 701748), (36, 584790), (40, 526311), (45, 467832), (54, 389860), (60, 350874), (72, 292395), (90, 233916), (101, 208440), (108, 194930), (120, 175437), (135, 155944), (180, 116958), (193, 109080), (202, 104220), (216, 97465), (270, 77972), (303, 69480), (360, 58479), (386, 54540), (404, 52110), (505, 41688), (540, 38986), (579, 36360), (606, 34740), (772, 27270), (808, 26055), (909, 23160), (965, 21816), (1010, 20844), (1080, 19493), (1158, 18180), (1212, 17370), (1515, 13896), (1544, 13635), (1737, 12120), (1818, 11580), (1930, 10908), (2020, 10422), (2316, 9090), (2424, 8685), (2727, 7720), (2895, 7272), (3030, 6948), (3474, 6060), (3636, 5790), (3860, 5454), (4040, 5211), (4545, 4632)]