21840689

素因数分解:

${\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{439}}^1$

素因数の和:584

約数の個数: 16

約数和(自身を含む): 24393600

約数和(自身を除く): 2552911

約数列:

[1, 13, 43, 89, 439, 559, 1157, 3827, 5707, 18877, 39071, 49751, 245401, 507923, 1680053, 21840689]

約数ペア:

[(1, 21840689), (13, 1680053), (43, 507923), (89, 245401), (439, 49751), (559, 39071), (1157, 18877), (3827, 5707)]