209728305

素因数分解:

$3^3\times 5^1\times {\mathrm{1553543}}^1$

素因数の和:1553557

約数の個数: 16

約数和(自身を含む): 372850560

約数和(自身を除く): 163122255

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 1553543, 4660629, 7767715, 13981887, 23303145, 41945661, 69909435, 209728305]

約数ペア:

[(1, 209728305), (3, 69909435), (5, 41945661), (9, 23303145), (15, 13981887), (27, 7767715), (45, 4660629), (135, 1553543)]