640098

素因数分解:

$2^1\times 3^2\times {\mathrm{43}}^1\times {\mathrm{827}}^1$

素因数の和:878

約数の個数: 24

約数和(自身を含む): 1420848

約数和(自身を除く): 780750

約数列:

[1, 2, 3, 6, 9, 18, 43, 86, 129, 258, 387, 774, 827, 1654, 2481, 4962, 7443, 14886, 35561, 71122, 106683, 213366, 320049, 640098]

約数ペア:

[(1, 640098), (2, 320049), (3, 213366), (6, 106683), (9, 71122), (18, 35561), (43, 14886), (86, 7443), (129, 4962), (258, 2481), (387, 1654), (774, 827)]