131980289

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{4703}}^1$

素因数の和:4940

約数の個数: 16

約数和(自身を含む): 159559680

約数和(自身を除く): 27579391

約数列:

[1, 7, 19, 133, 211, 1477, 4009, 4703, 28063, 32921, 89357, 625499, 992333, 6946331, 18854327, 131980289]

約数ペア:

[(1, 131980289), (7, 18854327), (19, 6946331), (133, 992333), (211, 625499), (1477, 89357), (4009, 32921), (4703, 28063)]