18928791

素因数分解:

$3^2\times 7^1\times {\mathrm{53}}^1\times {\mathrm{5669}}^1$

素因数の和:5735

約数の個数: 24

約数和(自身を含む): 31842720

約数和(自身を除く): 12913929

約数列:

[1, 3, 7, 9, 21, 53, 63, 159, 371, 477, 1113, 3339, 5669, 17007, 39683, 51021, 119049, 300457, 357147, 901371, 2103199, 2704113, 6309597, 18928791]

約数ペア:

[(1, 18928791), (3, 6309597), (7, 2704113), (9, 2103199), (21, 901371), (53, 357147), (63, 300457), (159, 119049), (371, 51021), (477, 39683), (1113, 17007), (3339, 5669)]