19863020

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{11159}}^1$

素因数の和:11257

約数の個数: 24

約数和(自身を含む): 42184800

約数和(自身を除く): 22321780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 11159, 22318, 44636, 55795, 111590, 223180, 993151, 1986302, 3972604, 4965755, 9931510, 19863020]

約数ペア:

[(1, 19863020), (2, 9931510), (4, 4965755), (5, 3972604), (10, 1986302), (20, 993151), (89, 223180), (178, 111590), (356, 55795), (445, 44636), (890, 22318), (1780, 11159)]