25342480

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{139}}^1$

素因数の和:248

約数の個数: 80

約数和(自身を含む): 61871040

約数和(自身を除く): 36528560

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 53, 80, 86, 106, 139, 172, 212, 215, 265, 278, 344, 424, 430, 530, 556, 688, 695, 848, 860, 1060, 1112, 1390, 1720, 2120, 2224, 2279, 2780, 3440, 4240, 4558, 5560, 5977, 7367, 9116, 11120, 11395, 11954, 14734, 18232, 22790, 23908, 29468, 29885, 36464, 36835, 45580, 47816, 58936, 59770, 73670, 91160, 95632, 117872, 119540, 147340, 182320, 239080, 294680, 316781, 478160, 589360, 633562, 1267124, 1583905, 2534248, 3167810, 5068496, 6335620, 12671240, 25342480]

約数ペア:

[(1, 25342480), (2, 12671240), (4, 6335620), (5, 5068496), (8, 3167810), (10, 2534248), (16, 1583905), (20, 1267124), (40, 633562), (43, 589360), (53, 478160), (80, 316781), (86, 294680), (106, 239080), (139, 182320), (172, 147340), (212, 119540), (215, 117872), (265, 95632), (278, 91160), (344, 73670), (424, 59770), (430, 58936), (530, 47816), (556, 45580), (688, 36835), (695, 36464), (848, 29885), (860, 29468), (1060, 23908), (1112, 22790), (1390, 18232), (1720, 14734), (2120, 11954), (2224, 11395), (2279, 11120), (2780, 9116), (3440, 7367), (4240, 5977), (4558, 5560)]