21474145

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{193}}^1$

素因数の和:250

約数の個数: 48

約数和(自身を含む): 34305408

約数和(自身を除く): 12831263

約数列:

[1, 5, 7, 11, 17, 35, 55, 77, 85, 119, 187, 193, 289, 385, 595, 935, 965, 1309, 1351, 1445, 2023, 2123, 3179, 3281, 6545, 6755, 10115, 10615, 14861, 15895, 16405, 22253, 22967, 36091, 55777, 74305, 111265, 114835, 180455, 252637, 278885, 390439, 613547, 1263185, 1952195, 3067735, 4294829, 21474145]

約数ペア:

[(1, 21474145), (5, 4294829), (7, 3067735), (11, 1952195), (17, 1263185), (35, 613547), (55, 390439), (77, 278885), (85, 252637), (119, 180455), (187, 114835), (193, 111265), (289, 74305), (385, 55777), (595, 36091), (935, 22967), (965, 22253), (1309, 16405), (1351, 15895), (1445, 14861), (2023, 10615), (2123, 10115), (3179, 6755), (3281, 6545)]