21643251

素因数分解:

$3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{5077}}^1$

素因数の和:5123

約数の個数: 24

約数和(自身を含む): 34733520

約数和(自身を除く): 13090269

約数列:

[1, 3, 7, 21, 29, 49, 87, 147, 203, 609, 1421, 4263, 5077, 15231, 35539, 106617, 147233, 248773, 441699, 746319, 1030631, 3091893, 7214417, 21643251]

約数ペア:

[(1, 21643251), (3, 7214417), (7, 3091893), (21, 1030631), (29, 746319), (49, 441699), (87, 248773), (147, 147233), (203, 106617), (609, 35539), (1421, 15231), (4263, 5077)]