21080007

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{6673}}^1$

素因数の和:6701

約数の個数: 24

約数和(自身を含む): 34010704

約数和(自身を除く): 12930697

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 243, 351, 1053, 3159, 6673, 20019, 60057, 86749, 180171, 260247, 540513, 780741, 1621539, 2342223, 7026669, 21080007]

約数ペア:

[(1, 21080007), (3, 7026669), (9, 2342223), (13, 1621539), (27, 780741), (39, 540513), (81, 260247), (117, 180171), (243, 86749), (351, 60057), (1053, 20019), (3159, 6673)]