20102887

素因数分解:

$7^3\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:140

約数の個数: 32

約数和(自身を含む): 25344000

約数和(自身を除く): 5241113

約数列:

[1, 7, 29, 43, 47, 49, 203, 301, 329, 343, 1247, 1363, 1421, 2021, 2107, 2303, 8729, 9541, 9947, 14147, 14749, 16121, 58609, 61103, 66787, 99029, 410263, 427721, 467509, 693203, 2871841, 20102887]

約数ペア:

[(1, 20102887), (7, 2871841), (29, 693203), (43, 467509), (47, 427721), (49, 410263), (203, 99029), (301, 66787), (329, 61103), (343, 58609), (1247, 16121), (1363, 14749), (1421, 14147), (2021, 9947), (2107, 9541), (2303, 8729)]