19404385

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3877}}^1$

素因数の和:3913

約数の個数: 32

約数和(自身を含む): 31272192

約数和(自身を除く): 11867807

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 385, 455, 715, 1001, 3877, 5005, 19385, 27139, 42647, 50401, 135695, 213235, 252005, 298529, 352807, 554411, 1492645, 1764035, 2772055, 3880877, 19404385]

約数ペア:

[(1, 19404385), (5, 3880877), (7, 2772055), (11, 1764035), (13, 1492645), (35, 554411), (55, 352807), (65, 298529), (77, 252005), (91, 213235), (143, 135695), (385, 50401), (455, 42647), (715, 27139), (1001, 19385), (3877, 5005)]