81540340

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{67}}^1\times {\mathrm{8693}}^1$

素因数の和:8776

約数の個数: 48

約数和(自身を含む): 198640512

約数和(自身を除く): 117100172

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 67, 70, 134, 140, 268, 335, 469, 670, 938, 1340, 1876, 2345, 4690, 8693, 9380, 17386, 34772, 43465, 60851, 86930, 121702, 173860, 243404, 304255, 582431, 608510, 1164862, 1217020, 2329724, 2912155, 4077017, 5824310, 8154034, 11648620, 16308068, 20385085, 40770170, 81540340]

約数ペア:

[(1, 81540340), (2, 40770170), (4, 20385085), (5, 16308068), (7, 11648620), (10, 8154034), (14, 5824310), (20, 4077017), (28, 2912155), (35, 2329724), (67, 1217020), (70, 1164862), (134, 608510), (140, 582431), (268, 304255), (335, 243404), (469, 173860), (670, 121702), (938, 86930), (1340, 60851), (1876, 43465), (2345, 34772), (4690, 17386), (8693, 9380)]