28724.000000

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^2\times {\mathrm{43}}^1$

素因数の和:90

約数の個数: 36

約数和(自身を含む): 1674992

約数和(自身を除く): 742967

約数列:

[1, 3, 5, 15, 17, 25, 43, 51, 75, 85, 129, 215, 255, 289, 425, 645, 731, 867, 1075, 1275, 1445, 2193, 3225, 3655, 4335, 7225, 10965, 12427, 18275, 21675, 37281, 54825, 62135, 186405, 310675, 932025]

約数ペア:

[(1, 932025), (3, 310675), (5, 186405), (15, 62135), (17, 54825), (25, 37281), (43, 21675), (51, 18275), (75, 12427), (85, 10965), (129, 7225), (215, 4335), (255, 3655), (289, 3225), (425, 2193), (645, 1445), (731, 1275), (867, 1075)]