19915553

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{137}}^1\times {\mathrm{1093}}^1$

素因数の和:1256

約数の個数: 16

約数和(自身を含む): 24155520

約数和(自身を除く): 4239967

約数列:

[1, 7, 19, 133, 137, 959, 1093, 2603, 7651, 18221, 20767, 145369, 149741, 1048187, 2845079, 19915553]

約数ペア:

[(1, 19915553), (7, 2845079), (19, 1048187), (133, 149741), (137, 145369), (959, 20767), (1093, 18221), (2603, 7651)]