201904605

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{640967}}^1$

素因数の和:640985

約数の個数: 24

約数和(自身を含む): 399964032

約数和(自身を除く): 198059427

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 105, 315, 640967, 1922901, 3204835, 4486769, 5768703, 9614505, 13460307, 22433845, 28843515, 40380921, 67301535, 201904605]

約数ペア:

[(1, 201904605), (3, 67301535), (5, 40380921), (7, 28843515), (9, 22433845), (15, 13460307), (21, 9614505), (35, 5768703), (45, 4486769), (63, 3204835), (105, 1922901), (315, 640967)]