19780904

素因数分解:

$2^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17291}}^1$

素因数の和:17321

約数の個数: 32

約数和(自身を含む): 43575840

約数和(自身を除く): 23794936

約数列:

[1, 2, 4, 8, 11, 13, 22, 26, 44, 52, 88, 104, 143, 286, 572, 1144, 17291, 34582, 69164, 138328, 190201, 224783, 380402, 449566, 760804, 899132, 1521608, 1798264, 2472613, 4945226, 9890452, 19780904]

約数ペア:

[(1, 19780904), (2, 9890452), (4, 4945226), (8, 2472613), (11, 1798264), (13, 1521608), (22, 899132), (26, 760804), (44, 449566), (52, 380402), (88, 224783), (104, 190201), (143, 138328), (286, 69164), (572, 34582), (1144, 17291)]