20726755

素因数分解:

$5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{2729}}^1$

素因数の和:2779

約数の個数: 24

約数和(自身を含む): 29877120

約数和(自身を除く): 9150365

約数列:

[1, 5, 7, 31, 35, 49, 155, 217, 245, 1085, 1519, 2729, 7595, 13645, 19103, 84599, 95515, 133721, 422995, 592193, 668605, 2960965, 4145351, 20726755]

約数ペア:

[(1, 20726755), (5, 4145351), (7, 2960965), (31, 668605), (35, 592193), (49, 422995), (155, 133721), (217, 95515), (245, 84599), (1085, 19103), (1519, 13645), (2729, 7595)]