28321515

素因数分解:

$3^3\times 5^1\times {\mathrm{209789}}^1$

素因数の和:209803

約数の個数: 16

約数和(自身を含む): 50349600

約数和(自身を除く): 22028085

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 209789, 629367, 1048945, 1888101, 3146835, 5664303, 9440505, 28321515]

約数ペア:

[(1, 28321515), (3, 9440505), (5, 5664303), (9, 3146835), (15, 1888101), (27, 1048945), (45, 629367), (135, 209789)]