20580400

素因数分解:

$2^4\times 5^2\times {\mathrm{23}}^1\times {\mathrm{2237}}^1$

素因数の和:2278

約数の個数: 60

約数和(自身を含む): 51617232

約数和(自身を除く): 31036832

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 25, 40, 46, 50, 80, 92, 100, 115, 184, 200, 230, 368, 400, 460, 575, 920, 1150, 1840, 2237, 2300, 4474, 4600, 8948, 9200, 11185, 17896, 22370, 35792, 44740, 51451, 55925, 89480, 102902, 111850, 178960, 205804, 223700, 257255, 411608, 447400, 514510, 823216, 894800, 1029020, 1286275, 2058040, 2572550, 4116080, 5145100, 10290200, 20580400]

約数ペア:

[(1, 20580400), (2, 10290200), (4, 5145100), (5, 4116080), (8, 2572550), (10, 2058040), (16, 1286275), (20, 1029020), (23, 894800), (25, 823216), (40, 514510), (46, 447400), (50, 411608), (80, 257255), (92, 223700), (100, 205804), (115, 178960), (184, 111850), (200, 102902), (230, 89480), (368, 55925), (400, 51451), (460, 44740), (575, 35792), (920, 22370), (1150, 17896), (1840, 11185), (2237, 9200), (2300, 8948), (4474, 4600)]