19995860

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{23251}}^1$

素因数の和:23303

約数の個数: 24

約数和(自身を含む): 42969696

約数和(自身を除く): 22973836

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 23251, 46502, 93004, 116255, 232510, 465020, 999793, 1999586, 3999172, 4998965, 9997930, 19995860]

約数ペア:

[(1, 19995860), (2, 9997930), (4, 4998965), (5, 3999172), (10, 1999586), (20, 999793), (43, 465020), (86, 232510), (172, 116255), (215, 93004), (430, 46502), (860, 23251)]