16905987

素因数分解:

$3^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{1801}}^1$

素因数の和:1963

約数の個数: 24

約数和(自身を含む): 28111200

約数和(自身を除く): 11205213

約数列:

[1, 3, 7, 9, 21, 63, 149, 447, 1043, 1341, 1801, 3129, 5403, 9387, 12607, 16209, 37821, 113463, 268349, 805047, 1878443, 2415141, 5635329, 16905987]

約数ペア:

[(1, 16905987), (3, 5635329), (7, 2415141), (9, 1878443), (21, 805047), (63, 268349), (149, 113463), (447, 37821), (1043, 16209), (1341, 12607), (1801, 9387), (3129, 5403)]