828563600

素因数分解:

$2^4\times 5^2\times {\mathrm{101}}^1\times {\mathrm{20509}}^1$

素因数の和:20628

約数の個数: 60

約数和(自身を含む): 2010431220

約数和(自身を除く): 1181867620

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 101, 200, 202, 400, 404, 505, 808, 1010, 1616, 2020, 2525, 4040, 5050, 8080, 10100, 20200, 20509, 40400, 41018, 82036, 102545, 164072, 205090, 328144, 410180, 512725, 820360, 1025450, 1640720, 2050900, 2071409, 4101800, 4142818, 8203600, 8285636, 10357045, 16571272, 20714090, 33142544, 41428180, 51785225, 82856360, 103570450, 165712720, 207140900, 414281800, 828563600]

約数ペア:

[(1, 828563600), (2, 414281800), (4, 207140900), (5, 165712720), (8, 103570450), (10, 82856360), (16, 51785225), (20, 41428180), (25, 33142544), (40, 20714090), (50, 16571272), (80, 10357045), (100, 8285636), (101, 8203600), (200, 4142818), (202, 4101800), (400, 2071409), (404, 2050900), (505, 1640720), (808, 1025450), (1010, 820360), (1616, 512725), (2020, 410180), (2525, 328144), (4040, 205090), (5050, 164072), (8080, 102545), (10100, 82036), (20200, 41018), (20509, 40400)]