21407997

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{97}}^1\times {\mathrm{5659}}^1$

素因数の和:5772

約数の個数: 16

約数和(自身を含む): 31062080

約数和(自身を除く): 9654083

約数列:

[1, 3, 13, 39, 97, 291, 1261, 3783, 5659, 16977, 73567, 220701, 548923, 1646769, 7135999, 21407997]

約数ペア:

[(1, 21407997), (3, 7135999), (13, 1646769), (39, 548923), (97, 220701), (291, 73567), (1261, 16977), (3783, 5659)]