28780947

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{491}}^1$

素因数の和:680

約数の個数: 32

約数和(自身を含む): 46287360

約数和(自身を除く): 17506413

約数列:

[1, 3, 9, 13, 27, 39, 117, 167, 351, 491, 501, 1473, 1503, 2171, 4419, 4509, 6383, 6513, 13257, 19149, 19539, 57447, 58617, 81997, 172341, 245991, 737973, 1065961, 2213919, 3197883, 9593649, 28780947]

約数ペア:

[(1, 28780947), (3, 9593649), (9, 3197883), (13, 2213919), (27, 1065961), (39, 737973), (117, 245991), (167, 172341), (351, 81997), (491, 58617), (501, 57447), (1473, 19539), (1503, 19149), (2171, 13257), (4419, 6513), (4509, 6383)]