19644625

素因数分解:

$5^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1$

素因数の和:203

約数の個数: 64

約数和(自身を含む): 33126912

約数和(自身を除く): 13482287

約数列:

[1, 5, 7, 11, 13, 25, 35, 55, 65, 77, 91, 125, 143, 157, 175, 275, 325, 385, 455, 715, 785, 875, 1001, 1099, 1375, 1625, 1727, 1925, 2041, 2275, 3575, 3925, 5005, 5495, 8635, 9625, 10205, 11375, 12089, 14287, 17875, 19625, 22451, 25025, 27475, 43175, 51025, 60445, 71435, 112255, 125125, 137375, 157157, 215875, 255125, 302225, 357175, 561275, 785785, 1511125, 1785875, 2806375, 3928925, 19644625]

約数ペア:

[(1, 19644625), (5, 3928925), (7, 2806375), (11, 1785875), (13, 1511125), (25, 785785), (35, 561275), (55, 357175), (65, 302225), (77, 255125), (91, 215875), (125, 157157), (143, 137375), (157, 125125), (175, 112255), (275, 71435), (325, 60445), (385, 51025), (455, 43175), (715, 27475), (785, 25025), (875, 22451), (1001, 19625), (1099, 17875), (1375, 14287), (1625, 12089), (1727, 11375), (1925, 10205), (2041, 9625), (2275, 8635), (3575, 5495), (3925, 5005)]