20999020

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149993}}^1$

素因数の和:150009

約数の個数: 24

約数和(自身を含む): 50397984

約数和(自身を除く): 29398964

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149993, 299986, 599972, 749965, 1049951, 1499930, 2099902, 2999860, 4199804, 5249755, 10499510, 20999020]

約数ペア:

[(1, 20999020), (2, 10499510), (4, 5249755), (5, 4199804), (7, 2999860), (10, 2099902), (14, 1499930), (20, 1049951), (28, 749965), (35, 599972), (70, 299986), (140, 149993)]