81354560

素因数分解:

$2^6\times 5^1\times 7^1\times {\mathrm{36319}}^1$

素因数の和:36343

約数の個数: 56

約数和(自身を含む): 221406720

約数和(自身を除く): 140052160

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 64, 70, 80, 112, 140, 160, 224, 280, 320, 448, 560, 1120, 2240, 36319, 72638, 145276, 181595, 254233, 290552, 363190, 508466, 581104, 726380, 1016932, 1162208, 1271165, 1452760, 2033864, 2324416, 2542330, 2905520, 4067728, 5084660, 5811040, 8135456, 10169320, 11622080, 16270912, 20338640, 40677280, 81354560]

約数ペア:

[(1, 81354560), (2, 40677280), (4, 20338640), (5, 16270912), (7, 11622080), (8, 10169320), (10, 8135456), (14, 5811040), (16, 5084660), (20, 4067728), (28, 2905520), (32, 2542330), (35, 2324416), (40, 2033864), (56, 1452760), (64, 1271165), (70, 1162208), (80, 1016932), (112, 726380), (140, 581104), (160, 508466), (224, 363190), (280, 290552), (320, 254233), (448, 181595), (560, 145276), (1120, 72638), (2240, 36319)]