19912497

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{179}}^1\times {\mathrm{3371}}^1$

素因数の和:3564

約数の個数: 16

約数和(自身を含む): 29134080

約数和(自身を除く): 9221583

約数列:

[1, 3, 11, 33, 179, 537, 1969, 3371, 5907, 10113, 37081, 111243, 603409, 1810227, 6637499, 19912497]

約数ペア:

[(1, 19912497), (3, 6637499), (11, 1810227), (33, 603409), (179, 111243), (537, 37081), (1969, 10113), (3371, 5907)]