81978638

素因数分解:

$2^1\times 7^1\times {\mathrm{389}}^1\times {\mathrm{15053}}^1$

素因数の和:15451

約数の個数: 16

約数和(自身を含む): 140905440

約数和(自身を除く): 58926802

約数列:

[1, 2, 7, 14, 389, 778, 2723, 5446, 15053, 30106, 105371, 210742, 5855617, 11711234, 40989319, 81978638]

約数ペア:

[(1, 81978638), (2, 40989319), (7, 11711234), (14, 5855617), (389, 210742), (778, 105371), (2723, 30106), (5446, 15053)]