20351013921

素因数分解:

$3^2\times 7^1\times {\mathrm{181}}^1\times {\mathrm{1784707}}^1$

素因数の和:1784901

約数の個数: 24

約数和(自身を含む): 33780953024

約数和(自身を除く): 13429939103

約数列:

[1, 3, 7, 9, 21, 63, 181, 543, 1267, 1629, 3801, 11403, 1784707, 5354121, 12492949, 16062363, 37478847, 112436541, 323031967, 969095901, 2261223769, 2907287703, 6783671307, 20351013921]

約数ペア:

[(1, 20351013921), (3, 6783671307), (7, 2907287703), (9, 2261223769), (21, 969095901), (63, 323031967), (181, 112436541), (543, 37478847), (1267, 16062363), (1629, 12492949), (3801, 5354121), (11403, 1784707)]