19407995

素因数分解:

$5^1\times {\mathrm{109}}^1\times {\mathrm{149}}^1\times {\mathrm{239}}^1$

素因数の和:502

約数の個数: 16

約数和(自身を含む): 23760000

約数和(自身を除く): 4352005

約数列:

[1, 5, 109, 149, 239, 545, 745, 1195, 16241, 26051, 35611, 81205, 130255, 178055, 3881599, 19407995]

約数ペア:

[(1, 19407995), (5, 3881599), (109, 178055), (149, 130255), (239, 81205), (545, 35611), (745, 26051), (1195, 16241)]