7939215

素因数分解:

$3^4\times 5^1\times {\mathrm{19603}}^1$

素因数の和:19620

約数の個数: 20

約数和(自身を含む): 14232504

約数和(自身を除く): 6293289

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 19603, 58809, 98015, 176427, 294045, 529281, 882135, 1587843, 2646405, 7939215]

約数ペア:

[(1, 7939215), (3, 2646405), (5, 1587843), (9, 882135), (15, 529281), (27, 294045), (45, 176427), (81, 98015), (135, 58809), (405, 19603)]