645595677

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{257107}}^1$

素因数の和:257150

約数の個数: 20

約数和(自身を含む): 995522176

約数和(自身を除く): 349926499

約数列:

[1, 3, 9, 27, 31, 81, 93, 279, 837, 2511, 257107, 771321, 2313963, 6941889, 7970317, 20825667, 23910951, 71732853, 215198559, 645595677]

約数ペア:

[(1, 645595677), (3, 215198559), (9, 71732853), (27, 23910951), (31, 20825667), (81, 7970317), (93, 6941889), (279, 2313963), (837, 771321), (2511, 257107)]