81815578

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{137}}^1\times {\mathrm{223}}^1$

素因数の和:478

約数の個数: 32

約数和(自身を含む): 135023616

約数和(自身を除く): 53208038

約数列:

[1, 2, 13, 26, 103, 137, 206, 223, 274, 446, 1339, 1781, 2678, 2899, 3562, 5798, 14111, 22969, 28222, 30551, 45938, 61102, 183443, 298597, 366886, 397163, 597194, 794326, 3146753, 6293506, 40907789, 81815578]

約数ペア:

[(1, 81815578), (2, 40907789), (13, 6293506), (26, 3146753), (103, 794326), (137, 597194), (206, 397163), (223, 366886), (274, 298597), (446, 183443), (1339, 61102), (1781, 45938), (2678, 30551), (2899, 28222), (3562, 22969), (5798, 14111)]