21353275

素因数分解:

$5^2\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{1069}}^1$

素因数の和:1143

約数の個数: 24

約数和(自身を含む): 28658880

約数和(自身を除く): 7305605

約数列:

[1, 5, 17, 25, 47, 85, 235, 425, 799, 1069, 1175, 3995, 5345, 18173, 19975, 26725, 50243, 90865, 251215, 454325, 854131, 1256075, 4270655, 21353275]

約数ペア:

[(1, 21353275), (5, 4270655), (17, 1256075), (25, 854131), (47, 454325), (85, 251215), (235, 90865), (425, 50243), (799, 26725), (1069, 19975), (1175, 18173), (3995, 5345)]