19877187

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{151}}^1\times {\mathrm{3989}}^1$

素因数の和:4154

約数の個数: 16

約数和(自身を含む): 29111040

約数和(自身を除く): 9233853

約数列:

[1, 3, 11, 33, 151, 453, 1661, 3989, 4983, 11967, 43879, 131637, 602339, 1807017, 6625729, 19877187]

約数ペア:

[(1, 19877187), (3, 6625729), (11, 1807017), (33, 602339), (151, 131637), (453, 43879), (1661, 11967), (3989, 4983)]