18915407

素因数分解:

$7^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{6911}}^1$

素因数の和:6958

約数の個数: 16

約数和(自身を含む): 23887872

約数和(自身を除く): 4972465

約数列:

[1, 7, 17, 23, 119, 161, 391, 2737, 6911, 48377, 117487, 158953, 822409, 1112671, 2702201, 18915407]

約数ペア:

[(1, 18915407), (7, 2702201), (17, 1112671), (23, 822409), (119, 158953), (161, 117487), (391, 48377), (2737, 6911)]