12944720

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{71}}^1$

素因数の和:180

約数の個数: 80

約数和(自身を含む): 31819392

約数和(自身を除く): 18874672

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 53, 71, 80, 86, 106, 142, 172, 212, 215, 265, 284, 344, 355, 424, 430, 530, 568, 688, 710, 848, 860, 1060, 1136, 1420, 1720, 2120, 2279, 2840, 3053, 3440, 3763, 4240, 4558, 5680, 6106, 7526, 9116, 11395, 12212, 15052, 15265, 18232, 18815, 22790, 24424, 30104, 30530, 36464, 37630, 45580, 48848, 60208, 61060, 75260, 91160, 122120, 150520, 161809, 182320, 244240, 301040, 323618, 647236, 809045, 1294472, 1618090, 2588944, 3236180, 6472360, 12944720]

約数ペア:

[(1, 12944720), (2, 6472360), (4, 3236180), (5, 2588944), (8, 1618090), (10, 1294472), (16, 809045), (20, 647236), (40, 323618), (43, 301040), (53, 244240), (71, 182320), (80, 161809), (86, 150520), (106, 122120), (142, 91160), (172, 75260), (212, 61060), (215, 60208), (265, 48848), (284, 45580), (344, 37630), (355, 36464), (424, 30530), (430, 30104), (530, 24424), (568, 22790), (688, 18815), (710, 18232), (848, 15265), (860, 15052), (1060, 12212), (1136, 11395), (1420, 9116), (1720, 7526), (2120, 6106), (2279, 5680), (2840, 4558), (3053, 4240), (3440, 3763)]