19974145

素因数分解:

$5^1\times {\mathrm{43}}^1\times {\mathrm{61}}^1\times {\mathrm{1523}}^1$

素因数の和:1632

約数の個数: 16

約数和(自身を含む): 24944832

約数和(自身を除く): 4970687

約数列:

[1, 5, 43, 61, 215, 305, 1523, 2623, 7615, 13115, 65489, 92903, 327445, 464515, 3994829, 19974145]

約数ペア:

[(1, 19974145), (5, 3994829), (43, 464515), (61, 327445), (215, 92903), (305, 65489), (1523, 13115), (2623, 7615)]