19975820

素因数分解:

$2^2\times 5^1\times {\mathrm{103}}^1\times {\mathrm{9697}}^1$

素因数の和:9809

約数の個数: 24

約数和(自身を含む): 42360864

約数和(自身を除く): 22385044

約数列:

[1, 2, 4, 5, 10, 20, 103, 206, 412, 515, 1030, 2060, 9697, 19394, 38788, 48485, 96970, 193940, 998791, 1997582, 3995164, 4993955, 9987910, 19975820]

約数ペア:

[(1, 19975820), (2, 9987910), (4, 4993955), (5, 3995164), (10, 1997582), (20, 998791), (103, 193940), (206, 96970), (412, 48485), (515, 38788), (1030, 19394), (2060, 9697)]