820400001

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1\times {\mathrm{65407}}^1$

素因数の和:65560

約数の個数: 16

約数和(自身を含む): 1133389824

約数和(自身を除く): 312989823

約数列:

[1, 3, 37, 111, 113, 339, 4181, 12543, 65407, 196221, 2420059, 7260177, 7390991, 22172973, 273466667, 820400001]

約数ペア:

[(1, 820400001), (3, 273466667), (37, 22172973), (111, 7390991), (113, 7260177), (339, 2420059), (4181, 196221), (12543, 65407)]