638272160

素因数分解:

$2^5\times 5^1\times {\mathrm{1279}}^1\times {\mathrm{3119}}^1$

素因数の和:4413

約数の個数: 48

約数和(自身を含む): 1509580800

約数和(自身を除く): 871308640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 1279, 2558, 3119, 5116, 6238, 6395, 10232, 12476, 12790, 15595, 20464, 24952, 25580, 31190, 40928, 49904, 51160, 62380, 99808, 102320, 124760, 204640, 249520, 499040, 3989201, 7978402, 15956804, 19946005, 31913608, 39892010, 63827216, 79784020, 127654432, 159568040, 319136080, 638272160]

約数ペア:

[(1, 638272160), (2, 319136080), (4, 159568040), (5, 127654432), (8, 79784020), (10, 63827216), (16, 39892010), (20, 31913608), (32, 19946005), (40, 15956804), (80, 7978402), (160, 3989201), (1279, 499040), (2558, 249520), (3119, 204640), (5116, 124760), (6238, 102320), (6395, 99808), (10232, 62380), (12476, 51160), (12790, 49904), (15595, 40928), (20464, 31190), (24952, 25580)]