19969815

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{1103}}^1$

素因数の和:1199

約数の個数: 32

約数和(自身を含む): 34338816

約数和(自身を除く): 14369001

約数列:

[1, 3, 5, 15, 17, 51, 71, 85, 213, 255, 355, 1065, 1103, 1207, 3309, 3621, 5515, 6035, 16545, 18105, 18751, 56253, 78313, 93755, 234939, 281265, 391565, 1174695, 1331321, 3993963, 6656605, 19969815]

約数ペア:

[(1, 19969815), (3, 6656605), (5, 3993963), (15, 1331321), (17, 1174695), (51, 391565), (71, 281265), (85, 234939), (213, 93755), (255, 78313), (355, 56253), (1065, 18751), (1103, 18105), (1207, 16545), (3309, 6035), (3621, 5515)]