21091185

素因数分解:

$3^5\times 5^1\times {\mathrm{17359}}^1$

素因数の和:17379

約数の個数: 24

約数和(自身を含む): 37914240

約数和(自身を除く): 16823055

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 1215, 17359, 52077, 86795, 156231, 260385, 468693, 781155, 1406079, 2343465, 4218237, 7030395, 21091185]

約数ペア:

[(1, 21091185), (3, 7030395), (5, 4218237), (9, 2343465), (15, 1406079), (27, 781155), (45, 468693), (81, 260385), (135, 156231), (243, 86795), (405, 52077), (1215, 17359)]