20986924

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{17431}}^1$

素因数の和:17485

約数の個数: 24

約数和(自身を含む): 42952448

約数和(自身を除く): 21965524

約数列:

[1, 2, 4, 7, 14, 28, 43, 86, 172, 301, 602, 1204, 17431, 34862, 69724, 122017, 244034, 488068, 749533, 1499066, 2998132, 5246731, 10493462, 20986924]

約数ペア:

[(1, 20986924), (2, 10493462), (4, 5246731), (7, 2998132), (14, 1499066), (28, 749533), (43, 488068), (86, 244034), (172, 122017), (301, 69724), (602, 34862), (1204, 17431)]