21378506

素因数分解:

$2^1\times {\mathrm{79}}^1\times {\mathrm{269}}^1\times {\mathrm{503}}^1$

素因数の和:853

約数の個数: 16

約数和(自身を含む): 32659200

約数和(自身を除く): 11280694

約数列:

[1, 2, 79, 158, 269, 503, 538, 1006, 21251, 39737, 42502, 79474, 135307, 270614, 10689253, 21378506]

約数ペア:

[(1, 21378506), (2, 10689253), (79, 270614), (158, 135307), (269, 79474), (503, 42502), (538, 39737), (1006, 21251)]