21152956

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{480749}}^1$

素因数の和:480764

約数の個数: 12

約数和(自身を含む): 40383000

約数和(自身を除く): 19230044

約数列:

[1, 2, 4, 11, 22, 44, 480749, 961498, 1922996, 5288239, 10576478, 21152956]

約数ペア:

[(1, 21152956), (2, 10576478), (4, 5288239), (11, 1922996), (22, 961498), (44, 480749)]