21036519

素因数分解:

$3^2\times 7^1\times {\mathrm{71}}^1\times {\mathrm{4703}}^1$

素因数の和:4787

約数の個数: 24

約数和(自身を含む): 35223552

約数和(自身を除く): 14187033

約数列:

[1, 3, 7, 9, 21, 63, 71, 213, 497, 639, 1491, 4473, 4703, 14109, 32921, 42327, 98763, 296289, 333913, 1001739, 2337391, 3005217, 7012173, 21036519]

約数ペア:

[(1, 21036519), (3, 7012173), (7, 3005217), (9, 2337391), (21, 1001739), (63, 333913), (71, 296289), (213, 98763), (497, 42327), (639, 32921), (1491, 14109), (4473, 4703)]