21050757

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{25703}}^1$

素因数の和:25729

約数の個数: 24

約数和(自身を含む): 37425024

約数和(自身を除く): 16374267

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 25703, 77109, 179921, 231327, 334139, 539763, 1002417, 1619289, 2338973, 3007251, 7016919, 21050757]

約数ペア:

[(1, 21050757), (3, 7016919), (7, 3007251), (9, 2338973), (13, 1619289), (21, 1002417), (39, 539763), (63, 334139), (91, 231327), (117, 179921), (273, 77109), (819, 25703)]