21380944

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{102793}}^1$

素因数の和:102814

約数の個数: 20

約数和(自身を含む): 44612596

約数和(自身を除く): 23231652

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 102793, 205586, 411172, 822344, 1336309, 1644688, 2672618, 5345236, 10690472, 21380944]

約数ペア:

[(1, 21380944), (2, 10690472), (4, 5345236), (8, 2672618), (13, 1644688), (16, 1336309), (26, 822344), (52, 411172), (104, 205586), (208, 102793)]