20177985

素因数分解:

$3^1\times 5^1\times {\mathrm{677}}^1\times {\mathrm{1987}}^1$

素因数の和:2672

約数の個数: 16

約数和(自身を含む): 32348736

約数和(自身を除く): 12170751

約数列:

[1, 3, 5, 15, 677, 1987, 2031, 3385, 5961, 9935, 10155, 29805, 1345199, 4035597, 6725995, 20177985]

約数ペア:

[(1, 20177985), (3, 6725995), (5, 4035597), (15, 1345199), (677, 29805), (1987, 10155), (2031, 9935), (3385, 5961)]