21048543

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{397}}^1$

素因数の和:583

約数の個数: 24

約数和(自身を含む): 31416528

約数和(自身を除く): 10367985

約数列:

[1, 3, 9, 43, 129, 137, 387, 397, 411, 1191, 1233, 3573, 5891, 17071, 17673, 51213, 53019, 54389, 153639, 163167, 489501, 2338727, 7016181, 21048543]

約数ペア:

[(1, 21048543), (3, 7016181), (9, 2338727), (43, 489501), (129, 163167), (137, 153639), (387, 54389), (397, 53019), (411, 51213), (1191, 17673), (1233, 17071), (3573, 5891)]