81731748

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{31387}}^1$

素因数の和:31432

約数の個数: 48

約数和(自身を含む): 224989184

約数和(自身を除く): 143257436

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 31, 42, 62, 84, 93, 124, 186, 217, 372, 434, 651, 868, 1302, 2604, 31387, 62774, 94161, 125548, 188322, 219709, 376644, 439418, 659127, 878836, 972997, 1318254, 1945994, 2636508, 2918991, 3891988, 5837982, 6810979, 11675964, 13621958, 20432937, 27243916, 40865874, 81731748]

約数ペア:

[(1, 81731748), (2, 40865874), (3, 27243916), (4, 20432937), (6, 13621958), (7, 11675964), (12, 6810979), (14, 5837982), (21, 3891988), (28, 2918991), (31, 2636508), (42, 1945994), (62, 1318254), (84, 972997), (93, 878836), (124, 659127), (186, 439418), (217, 376644), (372, 219709), (434, 188322), (651, 125548), (868, 94161), (1302, 62774), (2604, 31387)]