18986793

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{31177}}^1$

素因数の和:31216

約数の個数: 16

約数和(自身を含む): 29930880

約数和(自身を除く): 10944087

約数列:

[1, 3, 7, 21, 29, 87, 203, 609, 31177, 93531, 218239, 654717, 904133, 2712399, 6328931, 18986793]

約数ペア:

[(1, 18986793), (3, 6328931), (7, 2712399), (21, 904133), (29, 654717), (87, 218239), (203, 93531), (609, 31177)]