18131225

素因数分解:

$5^2\times 7^2\times {\mathrm{19}}^2\times {\mathrm{41}}^1$

素因数の和:103

約数の個数: 54

約数和(自身を含む): 28275534

約数和(自身を除く): 10144309

約数列:

[1, 5, 7, 19, 25, 35, 41, 49, 95, 133, 175, 205, 245, 287, 361, 475, 665, 779, 931, 1025, 1225, 1435, 1805, 2009, 2527, 3325, 3895, 4655, 5453, 7175, 9025, 10045, 12635, 14801, 17689, 19475, 23275, 27265, 38171, 50225, 63175, 74005, 88445, 103607, 136325, 190855, 370025, 442225, 518035, 725249, 954275, 2590175, 3626245, 18131225]

約数ペア:

[(1, 18131225), (5, 3626245), (7, 2590175), (19, 954275), (25, 725249), (35, 518035), (41, 442225), (49, 370025), (95, 190855), (133, 136325), (175, 103607), (205, 88445), (245, 74005), (287, 63175), (361, 50225), (475, 38171), (665, 27265), (779, 23275), (931, 19475), (1025, 17689), (1225, 14801), (1435, 12635), (1805, 10045), (2009, 9025), (2527, 7175), (3325, 5453), (3895, 4655)]