20001718

素因数分解:

$2^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{439}}^1$

素因数の和:580

約数の個数: 32

約数和(自身を含む): 34848000

約数和(自身を除く): 14846282

約数列:

[1, 2, 11, 19, 22, 38, 109, 209, 218, 418, 439, 878, 1199, 2071, 2398, 4142, 4829, 8341, 9658, 16682, 22781, 45562, 47851, 91751, 95702, 183502, 526361, 909169, 1052722, 1818338, 10000859, 20001718]

約数ペア:

[(1, 20001718), (2, 10000859), (11, 1818338), (19, 1052722), (22, 909169), (38, 526361), (109, 183502), (209, 95702), (218, 91751), (418, 47851), (439, 45562), (878, 22781), (1199, 16682), (2071, 9658), (2398, 8341), (4142, 4829)]