19971390

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{665713}}^1$

素因数の和:665723

約数の個数: 16

約数和(自身を含む): 47931408

約数和(自身を除く): 27960018

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 665713, 1331426, 1997139, 3328565, 3994278, 6657130, 9985695, 19971390]

約数ペア:

[(1, 19971390), (2, 9985695), (3, 6657130), (5, 3994278), (6, 3328565), (10, 1997139), (15, 1331426), (30, 665713)]