28108215

素因数分解:

$3^4\times 5^1\times {\mathrm{69403}}^1$

素因数の和:69420

約数の個数: 20

約数和(自身を含む): 50387304

約数和(自身を除く): 22279089

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 405, 69403, 208209, 347015, 624627, 1041045, 1873881, 3123135, 5621643, 9369405, 28108215]

約数ペア:

[(1, 28108215), (3, 9369405), (5, 5621643), (9, 3123135), (15, 1873881), (27, 1041045), (45, 624627), (81, 347015), (135, 208209), (405, 69403)]