61965

素因数分解:

$3^6\times 5^1\times {\mathrm{17}}^1$

素因数の和:40

約数の個数: 28

約数和(自身を含む): 118044

約数和(自身を除く): 56079

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 243, 255, 405, 459, 729, 765, 1215, 1377, 2295, 3645, 4131, 6885, 12393, 20655, 61965]

約数ペア:

[(1, 61965), (3, 20655), (5, 12393), (9, 6885), (15, 4131), (17, 3645), (27, 2295), (45, 1377), (51, 1215), (81, 765), (85, 729), (135, 459), (153, 405), (243, 255)]