2015500

素因数分解:

$2^2\times 5^3\times {\mathrm{29}}^1\times {\mathrm{139}}^1$

素因数の和:187

約数の個数: 48

約数和(自身を含む): 4586400

約数和(自身を除く): 2570900

約数列:

[1, 2, 4, 5, 10, 20, 25, 29, 50, 58, 100, 116, 125, 139, 145, 250, 278, 290, 500, 556, 580, 695, 725, 1390, 1450, 2780, 2900, 3475, 3625, 4031, 6950, 7250, 8062, 13900, 14500, 16124, 17375, 20155, 34750, 40310, 69500, 80620, 100775, 201550, 403100, 503875, 1007750, 2015500]

約数ペア:

[(1, 2015500), (2, 1007750), (4, 503875), (5, 403100), (10, 201550), (20, 100775), (25, 80620), (29, 69500), (50, 40310), (58, 34750), (100, 20155), (116, 17375), (125, 16124), (139, 14500), (145, 13900), (250, 8062), (278, 7250), (290, 6950), (500, 4031), (556, 3625), (580, 3475), (695, 2900), (725, 2780), (1390, 1450)]