21985166

素因数分解:

$2^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{82651}}^1$

素因数の和:82679

約数の個数: 16

約数和(自身を含む): 39672960

約数和(自身を除く): 17687794

約数列:

[1, 2, 7, 14, 19, 38, 133, 266, 82651, 165302, 578557, 1157114, 1570369, 3140738, 10992583, 21985166]

約数ペア:

[(1, 21985166), (2, 10992583), (7, 3140738), (14, 1570369), (19, 1157114), (38, 578557), (133, 165302), (266, 82651)]