21035147

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{109}}^1\times {\mathrm{1451}}^1$

素因数の和:1586

約数の個数: 16

約数和(自身を含む): 25555200

約数和(自身を除く): 4520053

約数列:

[1, 7, 19, 109, 133, 763, 1451, 2071, 10157, 14497, 27569, 158159, 192983, 1107113, 3005021, 21035147]

約数ペア:

[(1, 21035147), (7, 3005021), (19, 1107113), (109, 192983), (133, 158159), (763, 27569), (1451, 14497), (2071, 10157)]