645586720

素因数分解:

$2^5\times 5^1\times {\mathrm{127}}^1\times {\mathrm{31771}}^1$

素因数の和:31913

約数の個数: 48

約数和(自身を含む): 1537256448

約数和(自身を除く): 891669728

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 127, 160, 254, 508, 635, 1016, 1270, 2032, 2540, 4064, 5080, 10160, 20320, 31771, 63542, 127084, 158855, 254168, 317710, 508336, 635420, 1016672, 1270840, 2541680, 4034917, 5083360, 8069834, 16139668, 20174585, 32279336, 40349170, 64558672, 80698340, 129117344, 161396680, 322793360, 645586720]

約数ペア:

[(1, 645586720), (2, 322793360), (4, 161396680), (5, 129117344), (8, 80698340), (10, 64558672), (16, 40349170), (20, 32279336), (32, 20174585), (40, 16139668), (80, 8069834), (127, 5083360), (160, 4034917), (254, 2541680), (508, 1270840), (635, 1016672), (1016, 635420), (1270, 508336), (2032, 317710), (2540, 254168), (4064, 158855), (5080, 127084), (10160, 63542), (20320, 31771)]