81506390

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{61283}}^1$

素因数の和:61316

約数の個数: 32

約数和(自身を含む): 176497920

約数和(自身を除く): 94991530

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 70, 95, 133, 190, 266, 665, 1330, 61283, 122566, 306415, 428981, 612830, 857962, 1164377, 2144905, 2328754, 4289810, 5821885, 8150639, 11643770, 16301278, 40753195, 81506390]

約数ペア:

[(1, 81506390), (2, 40753195), (5, 16301278), (7, 11643770), (10, 8150639), (14, 5821885), (19, 4289810), (35, 2328754), (38, 2144905), (70, 1164377), (95, 857962), (133, 612830), (190, 428981), (266, 306415), (665, 122566), (1330, 61283)]