81691813

素因数分解:

$7^1\times {\mathrm{59}}^1\times {\mathrm{223}}^1\times {\mathrm{887}}^1$

素因数の和:1176

約数の個数: 16

約数和(自身を含む): 95477760

約数和(自身を除く): 13785947

約数列:

[1, 7, 59, 223, 413, 887, 1561, 6209, 13157, 52333, 92099, 197801, 366331, 1384607, 11670259, 81691813]

約数ペア:

[(1, 81691813), (7, 11670259), (59, 1384607), (223, 366331), (413, 197801), (887, 92099), (1561, 52333), (6209, 13157)]