21103647

素因数分解:

$3^1\times {\mathrm{17}}^2\times {\mathrm{101}}^1\times {\mathrm{241}}^1$

素因数の和:379

約数の個数: 24

約数和(自身を含む): 30311952

約数和(自身を除く): 9208305

約数列:

[1, 3, 17, 51, 101, 241, 289, 303, 723, 867, 1717, 4097, 5151, 12291, 24341, 29189, 69649, 73023, 87567, 208947, 413797, 1241391, 7034549, 21103647]

約数ペア:

[(1, 21103647), (3, 7034549), (17, 1241391), (51, 413797), (101, 208947), (241, 87567), (289, 73023), (303, 69649), (723, 29189), (867, 24341), (1717, 12291), (4097, 5151)]