28019980

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{60913}}^1$

素因数の和:60945

約数の個数: 24

約数和(自身を含む): 61401312

約数和(自身を除く): 33381332

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 92, 115, 230, 460, 60913, 121826, 243652, 304565, 609130, 1218260, 1400999, 2801998, 5603996, 7004995, 14009990, 28019980]

約数ペア:

[(1, 28019980), (2, 14009990), (4, 7004995), (5, 5603996), (10, 2801998), (20, 1400999), (23, 1218260), (46, 609130), (92, 304565), (115, 243652), (230, 121826), (460, 60913)]