20439760

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23227}}^1$

素因数の和:23251

約数の個数: 40

約数和(自身を含む): 51844896

約数和(自身を除く): 31405136

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23227, 46454, 92908, 116135, 185816, 232270, 255497, 371632, 464540, 510994, 929080, 1021988, 1277485, 1858160, 2043976, 2554970, 4087952, 5109940, 10219880, 20439760]

約数ペア:

[(1, 20439760), (2, 10219880), (4, 5109940), (5, 4087952), (8, 2554970), (10, 2043976), (11, 1858160), (16, 1277485), (20, 1021988), (22, 929080), (40, 510994), (44, 464540), (55, 371632), (80, 255497), (88, 232270), (110, 185816), (176, 116135), (220, 92908), (440, 46454), (880, 23227)]