19842640

素因数分解:

$2^4\times 5^1\times {\mathrm{248033}}^1$

素因数の和:248046

約数の個数: 20

約数和(自身を含む): 46134324

約数和(自身を除く): 26291684

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 248033, 496066, 992132, 1240165, 1984264, 2480330, 3968528, 4960660, 9921320, 19842640]

約数ペア:

[(1, 19842640), (2, 9921320), (4, 4960660), (5, 3968528), (8, 2480330), (10, 1984264), (16, 1240165), (20, 992132), (40, 496066), (80, 248033)]