208552455

素因数分解:

$3^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{81307}}^1$

素因数の和:81340

約数の個数: 32

約数和(自身を含む): 390278400

約数和(自身を除く): 181725945

約数列:

[1, 3, 5, 9, 15, 19, 27, 45, 57, 95, 135, 171, 285, 513, 855, 2565, 81307, 243921, 406535, 731763, 1219605, 1544833, 2195289, 3658815, 4634499, 7724165, 10976445, 13903497, 23172495, 41710491, 69517485, 208552455]

約数ペア:

[(1, 208552455), (3, 69517485), (5, 41710491), (9, 23172495), (15, 13903497), (19, 10976445), (27, 7724165), (45, 4634499), (57, 3658815), (95, 2195289), (135, 1544833), (171, 1219605), (285, 731763), (513, 406535), (855, 243921), (2565, 81307)]