20948690

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{139}}^1\times {\mathrm{2153}}^1$

素因数の和:2306

約数の個数: 32

約数和(自身を含む): 43424640

約数和(自身を除く): 22475950

約数列:

[1, 2, 5, 7, 10, 14, 35, 70, 139, 278, 695, 973, 1390, 1946, 2153, 4306, 4865, 9730, 10765, 15071, 21530, 30142, 75355, 150710, 299267, 598534, 1496335, 2094869, 2992670, 4189738, 10474345, 20948690]

約数ペア:

[(1, 20948690), (2, 10474345), (5, 4189738), (7, 2992670), (10, 2094869), (14, 1496335), (35, 598534), (70, 299267), (139, 150710), (278, 75355), (695, 30142), (973, 21530), (1390, 15071), (1946, 10765), (2153, 9730), (4306, 4865)]