20597800

素因数分解:

$2^3\times 5^2\times {\mathrm{181}}^1\times {\mathrm{569}}^1$

素因数の和:766

約数の個数: 48

約数和(自身を含む): 48239100

約数和(自身を除く): 27641300

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 181, 200, 362, 569, 724, 905, 1138, 1448, 1810, 2276, 2845, 3620, 4525, 4552, 5690, 7240, 9050, 11380, 14225, 18100, 22760, 28450, 36200, 56900, 102989, 113800, 205978, 411956, 514945, 823912, 1029890, 2059780, 2574725, 4119560, 5149450, 10298900, 20597800]

約数ペア:

[(1, 20597800), (2, 10298900), (4, 5149450), (5, 4119560), (8, 2574725), (10, 2059780), (20, 1029890), (25, 823912), (40, 514945), (50, 411956), (100, 205978), (181, 113800), (200, 102989), (362, 56900), (569, 36200), (724, 28450), (905, 22760), (1138, 18100), (1448, 14225), (1810, 11380), (2276, 9050), (2845, 7240), (3620, 5690), (4525, 4552)]