21992319

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{211}}^1\times {\mathrm{313}}^1$

素因数の和:567

約数の個数: 24

約数和(自身を含む): 32884592

約数和(自身を除く): 10892273

約数列:

[1, 3, 9, 37, 111, 211, 313, 333, 633, 939, 1899, 2817, 7807, 11581, 23421, 34743, 66043, 70263, 104229, 198129, 594387, 2443591, 7330773, 21992319]

約数ペア:

[(1, 21992319), (3, 7330773), (9, 2443591), (37, 594387), (111, 198129), (211, 104229), (313, 70263), (333, 66043), (633, 34743), (939, 23421), (1899, 11581), (2817, 7807)]