25199500

素因数分解:

$2^2\times 5^3\times {\mathrm{101}}^1\times {\mathrm{499}}^1$

素因数の和:619

約数の個数: 48

約数和(自身を含む): 55692000

約数和(自身を除く): 30492500

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 101, 125, 202, 250, 404, 499, 500, 505, 998, 1010, 1996, 2020, 2495, 2525, 4990, 5050, 9980, 10100, 12475, 12625, 24950, 25250, 49900, 50399, 50500, 62375, 100798, 124750, 201596, 249500, 251995, 503990, 1007980, 1259975, 2519950, 5039900, 6299875, 12599750, 25199500]

約数ペア:

[(1, 25199500), (2, 12599750), (4, 6299875), (5, 5039900), (10, 2519950), (20, 1259975), (25, 1007980), (50, 503990), (100, 251995), (101, 249500), (125, 201596), (202, 124750), (250, 100798), (404, 62375), (499, 50500), (500, 50399), (505, 49900), (998, 25250), (1010, 24950), (1996, 12625), (2020, 12475), (2495, 10100), (2525, 9980), (4990, 5050)]