21219691388

素因数分解:

$2^2\times 7^1\times {\mathrm{809}}^1\times {\mathrm{936769}}^1$

素因数の和:937589

約数の個数: 24

約数和(自身を含む): 42491887200

約数和(自身を除く): 21272195812

約数列:

[1, 2, 4, 7, 14, 28, 809, 1618, 3236, 5663, 11326, 22652, 936769, 1873538, 3747076, 6557383, 13114766, 26229532, 757846121, 1515692242, 3031384484, 5304922847, 10609845694, 21219691388]

約数ペア:

[(1, 21219691388), (2, 10609845694), (4, 5304922847), (7, 3031384484), (14, 1515692242), (28, 757846121), (809, 26229532), (1618, 13114766), (3236, 6557383), (5663, 3747076), (11326, 1873538), (22652, 936769)]