19901379

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{89}}^1\times {\mathrm{3923}}^1$

素因数の和:4034

約数の個数: 16

約数和(自身を含む): 28252800

約数和(自身を除く): 8351421

約数列:

[1, 3, 19, 57, 89, 267, 1691, 3923, 5073, 11769, 74537, 223611, 349147, 1047441, 6633793, 19901379]

約数ペア:

[(1, 19901379), (3, 6633793), (19, 1047441), (57, 349147), (89, 223611), (267, 74537), (1691, 11769), (3923, 5073)]