21890565

素因数分解:

$3^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{25603}}^1$

素因数の和:25633

約数の個数: 24

約数和(自身を含む): 39942240

約数和(自身を除く): 18051675

約数列:

[1, 3, 5, 9, 15, 19, 45, 57, 95, 171, 285, 855, 25603, 76809, 128015, 230427, 384045, 486457, 1152135, 1459371, 2432285, 4378113, 7296855, 21890565]

約数ペア:

[(1, 21890565), (3, 7296855), (5, 4378113), (9, 2432285), (15, 1459371), (19, 1152135), (45, 486457), (57, 384045), (95, 230427), (171, 128015), (285, 76809), (855, 25603)]