19020925

素因数分解:

$5^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{241}}^1$

素因数の和:310

約数の個数: 48

約数和(自身を含む): 30248064

約数和(自身を除く): 11227139

約数列:

[1, 5, 7, 11, 25, 35, 41, 55, 77, 175, 205, 241, 275, 287, 385, 451, 1025, 1205, 1435, 1687, 1925, 2255, 2651, 3157, 6025, 7175, 8435, 9881, 11275, 13255, 15785, 18557, 42175, 49405, 66275, 69167, 78925, 92785, 108691, 247025, 345835, 463925, 543455, 760837, 1729175, 2717275, 3804185, 19020925]

約数ペア:

[(1, 19020925), (5, 3804185), (7, 2717275), (11, 1729175), (25, 760837), (35, 543455), (41, 463925), (55, 345835), (77, 247025), (175, 108691), (205, 92785), (241, 78925), (275, 69167), (287, 66275), (385, 49405), (451, 42175), (1025, 18557), (1205, 15785), (1435, 13255), (1687, 11275), (1925, 9881), (2255, 8435), (2651, 7175), (3157, 6025)]