19907901

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{10009}}^1$

素因数の和:10045

約数の個数: 24

約数和(自身を含む): 32792760

約数和(自身を除く): 12884859

約数列:

[1, 3, 9, 13, 17, 39, 51, 117, 153, 221, 663, 1989, 10009, 30027, 90081, 130117, 170153, 390351, 510459, 1171053, 1531377, 2211989, 6635967, 19907901]

約数ペア:

[(1, 19907901), (3, 6635967), (9, 2211989), (13, 1531377), (17, 1171053), (39, 510459), (51, 390351), (117, 170153), (153, 130117), (221, 90081), (663, 30027), (1989, 10009)]