19900597717

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{864379}}^1$

素因数の和:864433

約数の個数: 32

約数和(自身を含む): 27881441280

約数和(自身を除く): 7980843563

約数列:

[1, 7, 11, 13, 23, 77, 91, 143, 161, 253, 299, 1001, 1771, 2093, 3289, 23023, 864379, 6050653, 9508169, 11236927, 19880717, 66557183, 78658489, 123606197, 139165019, 218687887, 258449321, 865243379, 1530815209, 1809145247, 2842942531, 19900597717]

約数ペア:

[(1, 19900597717), (7, 2842942531), (11, 1809145247), (13, 1530815209), (23, 865243379), (77, 258449321), (91, 218687887), (143, 139165019), (161, 123606197), (253, 78658489), (299, 66557183), (1001, 19880717), (1771, 11236927), (2093, 9508169), (3289, 6050653), (23023, 864379)]