21506445

素因数分解:

$3^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{9371}}^1$

素因数の和:9402

約数の個数: 32

約数和(自身を含む): 40487040

約数和(自身を除く): 18980595

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 85, 135, 153, 255, 459, 765, 2295, 9371, 28113, 46855, 84339, 140565, 159307, 253017, 421695, 477921, 796535, 1265085, 1433763, 2389605, 4301289, 7168815, 21506445]

約数ペア:

[(1, 21506445), (3, 7168815), (5, 4301289), (9, 2389605), (15, 1433763), (17, 1265085), (27, 796535), (45, 477921), (51, 421695), (85, 253017), (135, 159307), (153, 140565), (255, 84339), (459, 46855), (765, 28113), (2295, 9371)]