20889860

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{36017}}^1$

素因数の和:36055

約数の個数: 24

約数和(自身を含む): 45382680

約数和(自身を除く): 24492820

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 290, 580, 36017, 72034, 144068, 180085, 360170, 720340, 1044493, 2088986, 4177972, 5222465, 10444930, 20889860]

約数ペア:

[(1, 20889860), (2, 10444930), (4, 5222465), (5, 4177972), (10, 2088986), (20, 1044493), (29, 720340), (58, 360170), (116, 180085), (145, 144068), (290, 72034), (580, 36017)]