18081635

素因数分解:

$5^1\times {\mathrm{11}}^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1$

素因数の和:81

約数の個数: 40

約数和(自身を含む): 27056400

約数和(自身を除く): 8974765

約数列:

[1, 5, 11, 13, 19, 55, 65, 95, 121, 143, 209, 247, 605, 715, 1045, 1235, 1331, 1573, 2299, 2717, 6655, 7865, 11495, 13585, 14641, 17303, 25289, 29887, 73205, 86515, 126445, 149435, 190333, 278179, 328757, 951665, 1390895, 1643785, 3616327, 18081635]

約数ペア:

[(1, 18081635), (5, 3616327), (11, 1643785), (13, 1390895), (19, 951665), (55, 328757), (65, 278179), (95, 190333), (121, 149435), (143, 126445), (209, 86515), (247, 73205), (605, 29887), (715, 25289), (1045, 17303), (1235, 14641), (1331, 13585), (1573, 11495), (2299, 7865), (2717, 6655)]