387756579

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{971821}}^1$

素因数の和:971850

約数の個数: 16

約数和(自身を含む): 621966080

約数和(自身を除く): 234209501

約数列:

[1, 3, 7, 19, 21, 57, 133, 399, 971821, 2915463, 6802747, 18464599, 20408241, 55393797, 129252193, 387756579]

約数ペア:

[(1, 387756579), (3, 129252193), (7, 55393797), (19, 20408241), (21, 18464599), (57, 6802747), (133, 2915463), (399, 971821)]