1990998

素因数分解:

$2^1\times 3^2\times {\mathrm{53}}^1\times {\mathrm{2087}}^1$

素因数の和:2148

約数の個数: 24

約数和(自身を含む): 4397328

約数和(自身を除く): 2406330

約数列:

[1, 2, 3, 6, 9, 18, 53, 106, 159, 318, 477, 954, 2087, 4174, 6261, 12522, 18783, 37566, 110611, 221222, 331833, 663666, 995499, 1990998]

約数ペア:

[(1, 1990998), (2, 995499), (3, 663666), (6, 331833), (9, 221222), (18, 110611), (53, 37566), (106, 18783), (159, 12522), (318, 6261), (477, 4174), (954, 2087)]