20908963280

素因数分解:

$2^4\times 5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{264269}}^1$

素因数の和:264348

約数の個数: 80

約数和(自身を含む): 51906856320

約数和(自身を除く): 30997893040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 40, 43, 46, 80, 86, 92, 115, 172, 184, 215, 230, 344, 368, 430, 460, 688, 860, 920, 989, 1720, 1840, 1978, 3440, 3956, 4945, 7912, 9890, 15824, 19780, 39560, 79120, 264269, 528538, 1057076, 1321345, 2114152, 2642690, 4228304, 5285380, 6078187, 10570760, 11363567, 12156374, 21141520, 22727134, 24312748, 30390935, 45454268, 48625496, 56817835, 60781870, 90908536, 97250992, 113635670, 121563740, 181817072, 227271340, 243127480, 261362041, 454542680, 486254960, 522724082, 909085360, 1045448164, 1306810205, 2090896328, 2613620410, 4181792656, 5227240820, 10454481640, 20908963280]

約数ペア:

[(1, 20908963280), (2, 10454481640), (4, 5227240820), (5, 4181792656), (8, 2613620410), (10, 2090896328), (16, 1306810205), (20, 1045448164), (23, 909085360), (40, 522724082), (43, 486254960), (46, 454542680), (80, 261362041), (86, 243127480), (92, 227271340), (115, 181817072), (172, 121563740), (184, 113635670), (215, 97250992), (230, 90908536), (344, 60781870), (368, 56817835), (430, 48625496), (460, 45454268), (688, 30390935), (860, 24312748), (920, 22727134), (989, 21141520), (1720, 12156374), (1840, 11363567), (1978, 10570760), (3440, 6078187), (3956, 5285380), (4945, 4228304), (7912, 2642690), (9890, 2114152), (15824, 1321345), (19780, 1057076), (39560, 528538), (79120, 264269)]