81556573

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{389}}^1\times {\mathrm{491}}^1$

素因数の和:948

約数の個数: 16

約数和(自身を含む): 95172480

約数和(自身を除く): 13615907

約数列:

[1, 7, 61, 389, 427, 491, 2723, 3437, 23729, 29951, 166103, 190999, 209657, 1336993, 11650939, 81556573]

約数ペア:

[(1, 81556573), (7, 11650939), (61, 1336993), (389, 209657), (427, 190999), (491, 166103), (2723, 29951), (3437, 23729)]