81742895

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{631}}^1\times {\mathrm{1993}}^1$

素因数の和:2642

約数の個数: 16

約数和(自身を含む): 105857472

約数和(自身を除く): 24114577

約数列:

[1, 5, 13, 65, 631, 1993, 3155, 8203, 9965, 25909, 41015, 129545, 1257583, 6287915, 16348579, 81742895]

約数ペア:

[(1, 81742895), (5, 16348579), (13, 6287915), (65, 1257583), (631, 129545), (1993, 41015), (3155, 25909), (8203, 9965)]