21351897

素因数分解:

$3^3\times 7^2\times {\mathrm{16139}}^1$

素因数の和:16162

約数の個数: 24

約数和(自身を含む): 36799200

約数和(自身を除く): 15447303

約数列:

[1, 3, 7, 9, 21, 27, 49, 63, 147, 189, 441, 1323, 16139, 48417, 112973, 145251, 338919, 435753, 790811, 1016757, 2372433, 3050271, 7117299, 21351897]

約数ペア:

[(1, 21351897), (3, 7117299), (7, 3050271), (9, 2372433), (21, 1016757), (27, 790811), (49, 435753), (63, 338919), (147, 145251), (189, 112973), (441, 48417), (1323, 16139)]