21666075

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{16993}}^1$

素因数の和:17023

約数の個数: 24

約数和(自身を含む): 37930608

約数和(自身を除く): 16264533

約数列:

[1, 3, 5, 15, 17, 25, 51, 75, 85, 255, 425, 1275, 16993, 50979, 84965, 254895, 288881, 424825, 866643, 1274475, 1444405, 4333215, 7222025, 21666075]

約数ペア:

[(1, 21666075), (3, 7222025), (5, 4333215), (15, 1444405), (17, 1274475), (25, 866643), (51, 424825), (75, 288881), (85, 254895), (255, 84965), (425, 50979), (1275, 16993)]