19801743

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{26723}}^1$

素因数の和:26758

約数の個数: 16

約数和(自身を含む): 29930880

約数和(自身を除く): 10129137

約数列:

[1, 3, 13, 19, 39, 57, 247, 741, 26723, 80169, 347399, 507737, 1042197, 1523211, 6600581, 19801743]

約数ペア:

[(1, 19801743), (3, 6600581), (13, 1523211), (19, 1042197), (39, 507737), (57, 347399), (247, 80169), (741, 26723)]