20656167

素因数分解:

$3^1\times 7^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1\times {\mathrm{277}}^1$

素因数の和:407

約数の個数: 32

約数和(自身を含む): 32666112

約数和(自身を除く): 12009945

約数列:

[1, 3, 7, 21, 53, 67, 159, 201, 277, 371, 469, 831, 1113, 1407, 1939, 3551, 5817, 10653, 14681, 18559, 24857, 44043, 55677, 74571, 102767, 129913, 308301, 389739, 983627, 2950881, 6885389, 20656167]

約数ペア:

[(1, 20656167), (3, 6885389), (7, 2950881), (21, 983627), (53, 389739), (67, 308301), (159, 129913), (201, 102767), (277, 74571), (371, 55677), (469, 44043), (831, 24857), (1113, 18559), (1407, 14681), (1939, 10653), (3551, 5817)]