21771365

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{193}}^1\times {\mathrm{293}}^1$

素因数の和:509

約数の個数: 32

約数和(自身を含む): 32852736

約数和(自身を除く): 11081371

約数列:

[1, 5, 7, 11, 35, 55, 77, 193, 293, 385, 965, 1351, 1465, 2051, 2123, 3223, 6755, 10255, 10615, 14861, 16115, 22561, 56549, 74305, 112805, 282745, 395843, 622039, 1979215, 3110195, 4354273, 21771365]

約数ペア:

[(1, 21771365), (5, 4354273), (7, 3110195), (11, 1979215), (35, 622039), (55, 395843), (77, 282745), (193, 112805), (293, 74305), (385, 56549), (965, 22561), (1351, 16115), (1465, 14861), (2051, 10615), (2123, 10255), (3223, 6755)]