21495275

素因数分解:

$5^2\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{313}}^1$

素因数の和:431

約数の個数: 24

約数和(自身を含む): 27800304

約数和(自身を除く): 6305029

約数列:

[1, 5, 25, 41, 67, 205, 313, 335, 1025, 1565, 1675, 2747, 7825, 12833, 13735, 20971, 64165, 68675, 104855, 320825, 524275, 859811, 4299055, 21495275]

約数ペア:

[(1, 21495275), (5, 4299055), (25, 859811), (41, 524275), (67, 320825), (205, 104855), (313, 68675), (335, 64165), (1025, 20971), (1565, 13735), (1675, 12833), (2747, 7825)]