198713920

素因数分解:

$2^6\times 5^1\times {\mathrm{620981}}^1$

素因数の和:620998

約数の個数: 28

約数和(自身を含む): 473188284

約数和(自身を除く): 274474364

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 620981, 1241962, 2483924, 3104905, 4967848, 6209810, 9935696, 12419620, 19871392, 24839240, 39742784, 49678480, 99356960, 198713920]

約数ペア:

[(1, 198713920), (2, 99356960), (4, 49678480), (5, 39742784), (8, 24839240), (10, 19871392), (16, 12419620), (20, 9935696), (32, 6209810), (40, 4967848), (64, 3104905), (80, 2483924), (160, 1241962), (320, 620981)]