13219984

素因数分解:

$2^4\times {\mathrm{641}}^1\times {\mathrm{1289}}^1$

素因数の和:1938

約数の個数: 20

約数和(自身を含む): 25673580

約数和(自身を除く): 12453596

約数列:

[1, 2, 4, 8, 16, 641, 1282, 1289, 2564, 2578, 5128, 5156, 10256, 10312, 20624, 826249, 1652498, 3304996, 6609992, 13219984]

約数ペア:

[(1, 13219984), (2, 6609992), (4, 3304996), (8, 1652498), (16, 826249), (641, 20624), (1282, 10312), (1289, 10256), (2564, 5156), (2578, 5128)]