81820745

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{1747}}^1$

素因数の和:1817

約数の個数: 32

約数和(自身を含む): 113270400

約数和(自身を除く): 31449655

約数列:

[1, 5, 17, 19, 29, 85, 95, 145, 323, 493, 551, 1615, 1747, 2465, 2755, 8735, 9367, 29699, 33193, 46835, 50663, 148495, 165965, 253315, 564281, 861271, 962597, 2821405, 4306355, 4812985, 16364149, 81820745]

約数ペア:

[(1, 81820745), (5, 16364149), (17, 4812985), (19, 4306355), (29, 2821405), (85, 962597), (95, 861271), (145, 564281), (323, 253315), (493, 165965), (551, 148495), (1615, 50663), (1747, 46835), (2465, 33193), (2755, 29699), (8735, 9367)]