18969741

素因数分解:

$3^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{3461}}^1$

素因数の和:3506

約数の個数: 32

約数和(自身を含む): 33235200

約数和(自身を除く): 14265459

約数列:

[1, 3, 7, 9, 21, 27, 29, 63, 87, 189, 203, 261, 609, 783, 1827, 3461, 5481, 10383, 24227, 31149, 72681, 93447, 100369, 218043, 301107, 654129, 702583, 903321, 2107749, 2709963, 6323247, 18969741]

約数ペア:

[(1, 18969741), (3, 6323247), (7, 2709963), (9, 2107749), (21, 903321), (27, 702583), (29, 654129), (63, 301107), (87, 218043), (189, 100369), (203, 93447), (261, 72681), (609, 31149), (783, 24227), (1827, 10383), (3461, 5481)]