20356550

素因数分解:

$2^1\times 5^2\times {\mathrm{29}}^1\times {\mathrm{101}}^1\times {\mathrm{139}}^1$

素因数の和:281

約数の個数: 48

約数和(自身を含む): 39841200

約数和(自身を除く): 19484650

約数列:

[1, 2, 5, 10, 25, 29, 50, 58, 101, 139, 145, 202, 278, 290, 505, 695, 725, 1010, 1390, 1450, 2525, 2929, 3475, 4031, 5050, 5858, 6950, 8062, 14039, 14645, 20155, 28078, 29290, 40310, 70195, 73225, 100775, 140390, 146450, 201550, 350975, 407131, 701950, 814262, 2035655, 4071310, 10178275, 20356550]

約数ペア:

[(1, 20356550), (2, 10178275), (5, 4071310), (10, 2035655), (25, 814262), (29, 701950), (50, 407131), (58, 350975), (101, 201550), (139, 146450), (145, 140390), (202, 100775), (278, 73225), (290, 70195), (505, 40310), (695, 29290), (725, 28078), (1010, 20155), (1390, 14645), (1450, 14039), (2525, 8062), (2929, 6950), (3475, 5858), (4031, 5050)]