20150921

素因数分解:

$7^1\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{2663}}^1$

素因数の和:2740

約数の個数: 16

約数和(自身を含む): 24551424

約数和(自身を除く): 4400503

約数列:

[1, 7, 23, 47, 161, 329, 1081, 2663, 7567, 18641, 61249, 125161, 428743, 876127, 2878703, 20150921]

約数ペア:

[(1, 20150921), (7, 2878703), (23, 876127), (47, 428743), (161, 125161), (329, 61249), (1081, 18641), (2663, 7567)]