20993854

素因数分解:

$2^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{83}}^1\times {\mathrm{89}}^1$

素因数の和:217

約数の個数: 48

約数和(自身を含む): 38782800

約数和(自身を除く): 17788946

約数列:

[1, 2, 7, 14, 29, 49, 58, 83, 89, 98, 166, 178, 203, 406, 581, 623, 1162, 1246, 1421, 2407, 2581, 2842, 4067, 4361, 4814, 5162, 7387, 8134, 8722, 14774, 16849, 18067, 33698, 36134, 51709, 103418, 117943, 126469, 214223, 235886, 252938, 361963, 428446, 723926, 1499561, 2999122, 10496927, 20993854]

約数ペア:

[(1, 20993854), (2, 10496927), (7, 2999122), (14, 1499561), (29, 723926), (49, 428446), (58, 361963), (83, 252938), (89, 235886), (98, 214223), (166, 126469), (178, 117943), (203, 103418), (406, 51709), (581, 36134), (623, 33698), (1162, 18067), (1246, 16849), (1421, 14774), (2407, 8722), (2581, 8134), (2842, 7387), (4067, 5162), (4361, 4814)]