19664645

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{3929}}^1$

素因数の和:3965

約数の個数: 32

約数和(自身を含む): 31691520

約数和(自身を除く): 12026875

約数列:

[1, 5, 7, 11, 13, 35, 55, 65, 77, 91, 143, 385, 455, 715, 1001, 3929, 5005, 19645, 27503, 43219, 51077, 137515, 216095, 255385, 302533, 357539, 561847, 1512665, 1787695, 2809235, 3932929, 19664645]

約数ペア:

[(1, 19664645), (5, 3932929), (7, 2809235), (11, 1787695), (13, 1512665), (35, 561847), (55, 357539), (65, 302533), (77, 255385), (91, 216095), (143, 137515), (385, 51077), (455, 43219), (715, 27503), (1001, 19645), (3929, 5005)]