72139280

素因数分解:

$2^4\times 5^1\times {\mathrm{901741}}^1$

素因数の和:901754

約数の個数: 20

約数和(自身を含む): 167724012

約数和(自身を除く): 95584732

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 901741, 1803482, 3606964, 4508705, 7213928, 9017410, 14427856, 18034820, 36069640, 72139280]

約数ペア:

[(1, 72139280), (2, 36069640), (4, 18034820), (5, 14427856), (8, 9017410), (10, 7213928), (16, 4508705), (20, 3606964), (40, 1803482), (80, 901741)]