155770240

素因数分解:

$2^7\times 5^1\times {\mathrm{243391}}^1$

素因数の和:243410

約数の個数: 32

約数和(自身を含む): 372389760

約数和(自身を除く): 216619520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 243391, 486782, 973564, 1216955, 1947128, 2433910, 3894256, 4867820, 7788512, 9735640, 15577024, 19471280, 31154048, 38942560, 77885120, 155770240]

約数ペア:

[(1, 155770240), (2, 77885120), (4, 38942560), (5, 31154048), (8, 19471280), (10, 15577024), (16, 9735640), (20, 7788512), (32, 4867820), (40, 3894256), (64, 2433910), (80, 1947128), (128, 1216955), (160, 973564), (320, 486782), (640, 243391)]