78709491

素因数分解:

$3^2\times 7^1\times {\mathrm{647}}^1\times {\mathrm{1931}}^1$

素因数の和:2591

約数の個数: 24

約数和(自身を含む): 130201344

約数和(自身を除く): 51491853

約数列:

[1, 3, 7, 9, 21, 63, 647, 1931, 1941, 4529, 5793, 5823, 13517, 13587, 17379, 40551, 40761, 121653, 1249357, 3748071, 8745499, 11244213, 26236497, 78709491]

約数ペア:

[(1, 78709491), (3, 26236497), (7, 11244213), (9, 8745499), (21, 3748071), (63, 1249357), (647, 121653), (1931, 40761), (1941, 40551), (4529, 17379), (5793, 13587), (5823, 13517)]