51627380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{139}}^1\times {\mathrm{379}}^1$

素因数の和:541

約数の個数: 72

約数和(自身を含む): 127360800

約数和(自身を除く): 75733420

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 139, 140, 196, 245, 278, 379, 490, 556, 695, 758, 973, 980, 1390, 1516, 1895, 1946, 2653, 2780, 3790, 3892, 4865, 5306, 6811, 7580, 9730, 10612, 13265, 13622, 18571, 19460, 26530, 27244, 34055, 37142, 52681, 53060, 68110, 74284, 92855, 105362, 136220, 185710, 210724, 263405, 368767, 371420, 526810, 737534, 1053620, 1475068, 1843835, 2581369, 3687670, 5162738, 7375340, 10325476, 12906845, 25813690, 51627380]

約数ペア:

[(1, 51627380), (2, 25813690), (4, 12906845), (5, 10325476), (7, 7375340), (10, 5162738), (14, 3687670), (20, 2581369), (28, 1843835), (35, 1475068), (49, 1053620), (70, 737534), (98, 526810), (139, 371420), (140, 368767), (196, 263405), (245, 210724), (278, 185710), (379, 136220), (490, 105362), (556, 92855), (695, 74284), (758, 68110), (973, 53060), (980, 52681), (1390, 37142), (1516, 34055), (1895, 27244), (1946, 26530), (2653, 19460), (2780, 18571), (3790, 13622), (3892, 13265), (4865, 10612), (5306, 9730), (6811, 7580)]