16889420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{27241}}^1$

素因数の和:27281

約数の個数: 24

約数和(自身を含む): 36613248

約数和(自身を除く): 19723828

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 27241, 54482, 108964, 136205, 272410, 544820, 844471, 1688942, 3377884, 4222355, 8444710, 16889420]

約数ペア:

[(1, 16889420), (2, 8444710), (4, 4222355), (5, 3377884), (10, 1688942), (20, 844471), (31, 544820), (62, 272410), (124, 136205), (155, 108964), (310, 54482), (620, 27241)]