21141515

素因数分解:

$5^1\times {\mathrm{67}}^1\times {\mathrm{223}}^1\times {\mathrm{283}}^1$

素因数の和:578

約数の個数: 16

約数和(自身を含む): 25955328

約数和(自身を除く): 4813813

約数列:

[1, 5, 67, 223, 283, 335, 1115, 1415, 14941, 18961, 63109, 74705, 94805, 315545, 4228303, 21141515]

約数ペア:

[(1, 21141515), (5, 4228303), (67, 315545), (223, 94805), (283, 74705), (335, 63109), (1115, 18961), (1415, 14941)]