21471175

素因数分解:

$5^2\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{479}}^1$

素因数の和:663

約数の個数: 24

約数和(自身を含む): 29283840

約数和(自身を除く): 7812665

約数列:

[1, 5, 11, 25, 55, 163, 275, 479, 815, 1793, 2395, 4075, 5269, 8965, 11975, 26345, 44825, 78077, 131725, 390385, 858847, 1951925, 4294235, 21471175]

約数ペア:

[(1, 21471175), (5, 4294235), (11, 1951925), (25, 858847), (55, 390385), (163, 131725), (275, 78077), (479, 44825), (815, 26345), (1793, 11975), (2395, 8965), (4075, 5269)]