128520579

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{2887}}^1$

素因数の和:2991

約数の個数: 32

約数和(自身を含む): 199618560

約数和(自身を除く): 71097981

約数列:

[1, 3, 11, 19, 33, 57, 71, 209, 213, 627, 781, 1349, 2343, 2887, 4047, 8661, 14839, 31757, 44517, 54853, 95271, 164559, 204977, 603383, 614931, 1810149, 2254747, 3894563, 6764241, 11683689, 42840193, 128520579]

約数ペア:

[(1, 128520579), (3, 42840193), (11, 11683689), (19, 6764241), (33, 3894563), (57, 2254747), (71, 1810149), (209, 614931), (213, 603383), (627, 204977), (781, 164559), (1349, 95271), (2343, 54853), (2887, 44517), (4047, 31757), (8661, 14839)]