21107212

素因数分解:

$2^2\times 7^1\times {\mathrm{509}}^1\times {\mathrm{1481}}^1$

素因数の和:2001

約数の個数: 24

約数和(自身を含む): 42325920

約数和(自身を除く): 21218708

約数列:

[1, 2, 4, 7, 14, 28, 509, 1018, 1481, 2036, 2962, 3563, 5924, 7126, 10367, 14252, 20734, 41468, 753829, 1507658, 3015316, 5276803, 10553606, 21107212]

約数ペア:

[(1, 21107212), (2, 10553606), (4, 5276803), (7, 3015316), (14, 1507658), (28, 753829), (509, 41468), (1018, 20734), (1481, 14252), (2036, 10367), (2962, 7126), (3563, 5924)]