20539988

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{38609}}^1$

素因数の和:38639

約数の個数: 24

約数和(自身を含む): 43243200

約数和(自身を除く): 22703212

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 76, 133, 266, 532, 38609, 77218, 154436, 270263, 540526, 733571, 1081052, 1467142, 2934284, 5134997, 10269994, 20539988]

約数ペア:

[(1, 20539988), (2, 10269994), (4, 5134997), (7, 2934284), (14, 1467142), (19, 1081052), (28, 733571), (38, 540526), (76, 270263), (133, 154436), (266, 77218), (532, 38609)]