21693776

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{104297}}^1$

素因数の和:104318

約数の個数: 20

約数和(自身を含む): 45265332

約数和(自身を除く): 23571556

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 104297, 208594, 417188, 834376, 1355861, 1668752, 2711722, 5423444, 10846888, 21693776]

約数ペア:

[(1, 21693776), (2, 10846888), (4, 5423444), (8, 2711722), (13, 1668752), (16, 1355861), (26, 834376), (52, 417188), (104, 208594), (208, 104297)]