20218880080

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{494591}}^1$

素因数の和:494684

約数の個数: 80

約数和(自身を含む): 54460514304

約数和(自身を除く): 34241634224

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 73, 80, 112, 140, 146, 280, 292, 365, 511, 560, 584, 730, 1022, 1168, 1460, 2044, 2555, 2920, 4088, 5110, 5840, 8176, 10220, 20440, 40880, 494591, 989182, 1978364, 2472955, 3462137, 3956728, 4945910, 6924274, 7913456, 9891820, 13848548, 17310685, 19783640, 27697096, 34621370, 36105143, 39567280, 55394192, 69242740, 72210286, 138485480, 144420572, 180525715, 252736001, 276970960, 288841144, 361051430, 505472002, 577682288, 722102860, 1010944004, 1263680005, 1444205720, 2021888008, 2527360010, 2888411440, 4043776016, 5054720020, 10109440040, 20218880080]

約数ペア:

[(1, 20218880080), (2, 10109440040), (4, 5054720020), (5, 4043776016), (7, 2888411440), (8, 2527360010), (10, 2021888008), (14, 1444205720), (16, 1263680005), (20, 1010944004), (28, 722102860), (35, 577682288), (40, 505472002), (56, 361051430), (70, 288841144), (73, 276970960), (80, 252736001), (112, 180525715), (140, 144420572), (146, 138485480), (280, 72210286), (292, 69242740), (365, 55394192), (511, 39567280), (560, 36105143), (584, 34621370), (730, 27697096), (1022, 19783640), (1168, 17310685), (1460, 13848548), (2044, 9891820), (2555, 7913456), (2920, 6924274), (4088, 4945910), (5110, 3956728), (5840, 3462137), (8176, 2472955), (10220, 1978364), (20440, 989182), (40880, 494591)]