71880291

素因数分解:

$3^4\times 7^1\times {\mathrm{331}}^1\times {\mathrm{383}}^1$

素因数の和:733

約数の個数: 40

約数和(自身を含む): 123408384

約数和(自身を除く): 51528093

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 331, 383, 567, 993, 1149, 2317, 2681, 2979, 3447, 6951, 8043, 8937, 10341, 20853, 24129, 26811, 31023, 62559, 72387, 126773, 187677, 217161, 380319, 887411, 1140957, 2662233, 3422871, 7986699, 10268613, 23960097, 71880291]

約数ペア:

[(1, 71880291), (3, 23960097), (7, 10268613), (9, 7986699), (21, 3422871), (27, 2662233), (63, 1140957), (81, 887411), (189, 380319), (331, 217161), (383, 187677), (567, 126773), (993, 72387), (1149, 62559), (2317, 31023), (2681, 26811), (2979, 24129), (3447, 20853), (6951, 10341), (8043, 8937)]