81351025

素因数分解:

$5^2\times 7^3\times {\mathrm{53}}^1\times {\mathrm{179}}^1$

素因数の和:263

約数の個数: 48

約数和(自身を含む): 120528000

約数和(自身を除く): 39176975

約数列:

[1, 5, 7, 25, 35, 49, 53, 175, 179, 245, 265, 343, 371, 895, 1225, 1253, 1325, 1715, 1855, 2597, 4475, 6265, 8575, 8771, 9275, 9487, 12985, 18179, 31325, 43855, 47435, 61397, 64925, 66409, 90895, 219275, 237175, 306985, 332045, 454475, 464863, 1534925, 1660225, 2324315, 3254041, 11621575, 16270205, 81351025]

約数ペア:

[(1, 81351025), (5, 16270205), (7, 11621575), (25, 3254041), (35, 2324315), (49, 1660225), (53, 1534925), (175, 464863), (179, 454475), (245, 332045), (265, 306985), (343, 237175), (371, 219275), (895, 90895), (1225, 66409), (1253, 64925), (1325, 61397), (1715, 47435), (1855, 43855), (2597, 31325), (4475, 18179), (6265, 12985), (8575, 9487), (8771, 9275)]