18993897

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{2423}}^1$

素因数の和:2509

約数の個数: 24

約数和(自身を含む): 29999424

約数和(自身を除く): 11005527

約数列:

[1, 3, 9, 13, 39, 67, 117, 201, 603, 871, 2423, 2613, 7269, 7839, 21807, 31499, 94497, 162341, 283491, 487023, 1461069, 2110433, 6331299, 18993897]

約数ペア:

[(1, 18993897), (3, 6331299), (9, 2110433), (13, 1461069), (39, 487023), (67, 283491), (117, 162341), (201, 94497), (603, 31499), (871, 21807), (2423, 7839), (2613, 7269)]