15691981977

素因数分解:

$3^2\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{217157}}^1$

素因数の和:217238

約数の個数: 48

約数和(自身を含む): 27462669312

約数和(自身を除く): 11770687335

約数列:

[1, 3, 7, 9, 21, 31, 37, 63, 93, 111, 217, 259, 279, 333, 651, 777, 1147, 1953, 2331, 3441, 8029, 10323, 24087, 72261, 217157, 651471, 1520099, 1954413, 4560297, 6731867, 8034809, 13680891, 20195601, 24104427, 47123069, 56243663, 60586803, 72313281, 141369207, 168730989, 249079079, 424107621, 506192967, 747237237, 1743553553, 2241711711, 5230660659, 15691981977]

約数ペア:

[(1, 15691981977), (3, 5230660659), (7, 2241711711), (9, 1743553553), (21, 747237237), (31, 506192967), (37, 424107621), (63, 249079079), (93, 168730989), (111, 141369207), (217, 72313281), (259, 60586803), (279, 56243663), (333, 47123069), (651, 24104427), (777, 20195601), (1147, 13680891), (1953, 8034809), (2331, 6731867), (3441, 4560297), (8029, 1954413), (10323, 1520099), (24087, 651471), (72261, 217157)]