16991937

素因数分解:

$3^4\times {\mathrm{31}}^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1$

素因数の和:211

約数の個数: 40

約数和(自身を含む): 26856192

約数和(自身を除く): 9864255

約数列:

[1, 3, 9, 27, 31, 67, 81, 93, 101, 201, 279, 303, 603, 837, 909, 1809, 2077, 2511, 2727, 3131, 5427, 6231, 6767, 8181, 9393, 18693, 20301, 28179, 56079, 60903, 84537, 168237, 182709, 209777, 253611, 548127, 629331, 1887993, 5663979, 16991937]

約数ペア:

[(1, 16991937), (3, 5663979), (9, 1887993), (27, 629331), (31, 548127), (67, 253611), (81, 209777), (93, 182709), (101, 168237), (201, 84537), (279, 60903), (303, 56079), (603, 28179), (837, 20301), (909, 18693), (1809, 9393), (2077, 8181), (2511, 6767), (2727, 6231), (3131, 5427)]