21087209

素因数分解:

${\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{239}}^1\times {\mathrm{617}}^1$

素因数の和:880

約数の個数: 16

約数和(自身を含む): 24917760

約数和(自身を除く): 3830551

約数列:

[1, 11, 13, 143, 239, 617, 2629, 3107, 6787, 8021, 34177, 88231, 147463, 1622093, 1917019, 21087209]

約数ペア:

[(1, 21087209), (11, 1917019), (13, 1622093), (143, 147463), (239, 88231), (617, 34177), (2629, 8021), (3107, 6787)]