21970035

素因数分解:

$3^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{3191}}^1$

素因数の和:3225

約数の個数: 40

約数和(自身を含む): 41713056

約数和(自身を除く): 19743021

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 255, 405, 459, 765, 1377, 2295, 3191, 6885, 9573, 15955, 28719, 47865, 54247, 86157, 143595, 162741, 258471, 271235, 430785, 488223, 813705, 1292355, 1464669, 2441115, 4394007, 7323345, 21970035]

約数ペア:

[(1, 21970035), (3, 7323345), (5, 4394007), (9, 2441115), (15, 1464669), (17, 1292355), (27, 813705), (45, 488223), (51, 430785), (81, 271235), (85, 258471), (135, 162741), (153, 143595), (255, 86157), (405, 54247), (459, 47865), (765, 28719), (1377, 15955), (2295, 9573), (3191, 6885)]