21511184

素因数分解:

$2^4\times {\mathrm{191}}^1\times {\mathrm{7039}}^1$

素因数の和:7238

約数の個数: 20

約数和(自身を含む): 41902080

約数和(自身を除く): 20390896

約数列:

[1, 2, 4, 8, 16, 191, 382, 764, 1528, 3056, 7039, 14078, 28156, 56312, 112624, 1344449, 2688898, 5377796, 10755592, 21511184]

約数ペア:

[(1, 21511184), (2, 10755592), (4, 5377796), (8, 2688898), (16, 1344449), (191, 112624), (382, 56312), (764, 28156), (1528, 14078), (3056, 7039)]