20896295

素因数分解:

$5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{67}}^2$

素因数の和:172

約数の個数: 36

約数和(自身を含む): 31169880

約数和(自身を除く): 10273585

約数列:

[1, 5, 7, 19, 35, 49, 67, 95, 133, 245, 335, 469, 665, 931, 1273, 2345, 3283, 4489, 4655, 6365, 8911, 16415, 22445, 31423, 44555, 62377, 85291, 157115, 219961, 311885, 426455, 597037, 1099805, 2985185, 4179259, 20896295]

約数ペア:

[(1, 20896295), (5, 4179259), (7, 2985185), (19, 1099805), (35, 597037), (49, 426455), (67, 311885), (95, 219961), (133, 157115), (245, 85291), (335, 62377), (469, 44555), (665, 31423), (931, 22445), (1273, 16415), (2345, 8911), (3283, 6365), (4489, 4655)]