21308476

素因数分解:

$2^2\times 7^1\times {\mathrm{311}}^1\times {\mathrm{2447}}^1$

素因数の和:2769

約数の個数: 24

約数和(自身を含む): 42771456

約数和(自身を除く): 21462980

約数列:

[1, 2, 4, 7, 14, 28, 311, 622, 1244, 2177, 2447, 4354, 4894, 8708, 9788, 17129, 34258, 68516, 761017, 1522034, 3044068, 5327119, 10654238, 21308476]

約数ペア:

[(1, 21308476), (2, 10654238), (4, 5327119), (7, 3044068), (14, 1522034), (28, 761017), (311, 68516), (622, 34258), (1244, 17129), (2177, 9788), (2447, 8708), (4354, 4894)]