28439440

素因数分解:

$2^4\times 5^1\times {\mathrm{433}}^1\times {\mathrm{821}}^1$

素因数の和:1267

約数の個数: 40

約数和(自身を含む): 66355128

約数和(自身を除く): 37915688

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 433, 821, 866, 1642, 1732, 2165, 3284, 3464, 4105, 4330, 6568, 6928, 8210, 8660, 13136, 16420, 17320, 32840, 34640, 65680, 355493, 710986, 1421972, 1777465, 2843944, 3554930, 5687888, 7109860, 14219720, 28439440]

約数ペア:

[(1, 28439440), (2, 14219720), (4, 7109860), (5, 5687888), (8, 3554930), (10, 2843944), (16, 1777465), (20, 1421972), (40, 710986), (80, 355493), (433, 65680), (821, 34640), (866, 32840), (1642, 17320), (1732, 16420), (2165, 13136), (3284, 8660), (3464, 8210), (4105, 6928), (4330, 6568)]