20715500

素因数分解:

$2^2\times 5^3\times {\mathrm{13}}^1\times {\mathrm{3187}}^1$

素因数の和:3219

約数の個数: 48

約数和(自身を含む): 48738144

約数和(自身を除く): 28022644

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 650, 1300, 1625, 3187, 3250, 6374, 6500, 12748, 15935, 31870, 41431, 63740, 79675, 82862, 159350, 165724, 207155, 318700, 398375, 414310, 796750, 828620, 1035775, 1593500, 2071550, 4143100, 5178875, 10357750, 20715500]

約数ペア:

[(1, 20715500), (2, 10357750), (4, 5178875), (5, 4143100), (10, 2071550), (13, 1593500), (20, 1035775), (25, 828620), (26, 796750), (50, 414310), (52, 398375), (65, 318700), (100, 207155), (125, 165724), (130, 159350), (250, 82862), (260, 79675), (325, 63740), (500, 41431), (650, 31870), (1300, 15935), (1625, 12748), (3187, 6500), (3250, 6374)]