81657814

素因数分解:

$2^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{20323}}^1$

素因数の和:20380

約数の個数: 24

約数和(自身を含む): 145966968

約数和(自身を除く): 64309154

約数列:

[1, 2, 7, 14, 41, 49, 82, 98, 287, 574, 2009, 4018, 20323, 40646, 142261, 284522, 833243, 995827, 1666486, 1991654, 5832701, 11665402, 40828907, 81657814]

約数ペア:

[(1, 81657814), (2, 40828907), (7, 11665402), (14, 5832701), (41, 1991654), (49, 1666486), (82, 995827), (98, 833243), (287, 284522), (574, 142261), (2009, 40646), (4018, 20323)]