21692255

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{293}}^1$

素因数の和:395

約数の個数: 32

約数和(自身を含む): 30227904

約数和(自身を除く): 8535649

約数列:

[1, 5, 13, 17, 65, 67, 85, 221, 293, 335, 871, 1105, 1139, 1465, 3809, 4355, 4981, 5695, 14807, 19045, 19631, 24905, 64753, 74035, 98155, 255203, 323765, 333727, 1276015, 1668635, 4338451, 21692255]

約数ペア:

[(1, 21692255), (5, 4338451), (13, 1668635), (17, 1276015), (65, 333727), (67, 323765), (85, 255203), (221, 98155), (293, 74035), (335, 64753), (871, 24905), (1105, 19631), (1139, 19045), (1465, 14807), (3809, 5695), (4355, 4981)]