19850080

素因数分解:

$2^5\times 5^1\times {\mathrm{97}}^1\times {\mathrm{1279}}^1$

素因数の和:1391

約数の個数: 48

約数和(自身を含む): 47416320

約数和(自身を除く): 27566240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 97, 160, 194, 388, 485, 776, 970, 1279, 1552, 1940, 2558, 3104, 3880, 5116, 6395, 7760, 10232, 12790, 15520, 20464, 25580, 40928, 51160, 102320, 124063, 204640, 248126, 496252, 620315, 992504, 1240630, 1985008, 2481260, 3970016, 4962520, 9925040, 19850080]

約数ペア:

[(1, 19850080), (2, 9925040), (4, 4962520), (5, 3970016), (8, 2481260), (10, 1985008), (16, 1240630), (20, 992504), (32, 620315), (40, 496252), (80, 248126), (97, 204640), (160, 124063), (194, 102320), (388, 51160), (485, 40928), (776, 25580), (970, 20464), (1279, 15520), (1552, 12790), (1940, 10232), (2558, 7760), (3104, 6395), (3880, 5116)]