80716640

素因数分解:

$2^5\times 5^1\times {\mathrm{504479}}^1$

素因数の和:504494

約数の個数: 24

約数和(自身を含む): 190693440

約数和(自身を除く): 109976800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 504479, 1008958, 2017916, 2522395, 4035832, 5044790, 8071664, 10089580, 16143328, 20179160, 40358320, 80716640]

約数ペア:

[(1, 80716640), (2, 40358320), (4, 20179160), (5, 16143328), (8, 10089580), (10, 8071664), (16, 5044790), (20, 4035832), (32, 2522395), (40, 2017916), (80, 1008958), (160, 504479)]