28123820

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{45361}}^1$

素因数の和:45401

約数の個数: 24

約数和(自身を含む): 60966528

約数和(自身を除く): 32842708

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 45361, 90722, 181444, 226805, 453610, 907220, 1406191, 2812382, 5624764, 7030955, 14061910, 28123820]

約数ペア:

[(1, 28123820), (2, 14061910), (4, 7030955), (5, 5624764), (10, 2812382), (20, 1406191), (31, 907220), (62, 453610), (124, 226805), (155, 181444), (310, 90722), (620, 45361)]