21725120

素因数分解:

$2^6\times 5^1\times {\mathrm{67891}}^1$

素因数の和:67908

約数の個数: 28

約数和(自身を含む): 51733704

約数和(自身を除く): 30008584

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 67891, 135782, 271564, 339455, 543128, 678910, 1086256, 1357820, 2172512, 2715640, 4345024, 5431280, 10862560, 21725120]

約数ペア:

[(1, 21725120), (2, 10862560), (4, 5431280), (5, 4345024), (8, 2715640), (10, 2172512), (16, 1357820), (20, 1086256), (32, 678910), (40, 543128), (64, 339455), (80, 271564), (160, 135782), (320, 67891)]