21487732

素因数分解:

$2^2\times 7^1\times {\mathrm{139}}^1\times {\mathrm{5521}}^1$

素因数の和:5671

約数の個数: 24

約数和(自身を含む): 43292480

約数和(自身を除く): 21804748

約数列:

[1, 2, 4, 7, 14, 28, 139, 278, 556, 973, 1946, 3892, 5521, 11042, 22084, 38647, 77294, 154588, 767419, 1534838, 3069676, 5371933, 10743866, 21487732]

約数ペア:

[(1, 21487732), (2, 10743866), (4, 5371933), (7, 3069676), (14, 1534838), (28, 767419), (139, 154588), (278, 77294), (556, 38647), (973, 22084), (1946, 11042), (3892, 5521)]