21182985

素因数分解:

$3^3\times 5^1\times {\mathrm{173}}^1\times {\mathrm{907}}^1$

素因数の和:1094

約数の個数: 32

約数和(自身を含む): 37918080

約数和(自身を除く): 16735095

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 173, 519, 865, 907, 1557, 2595, 2721, 4535, 4671, 7785, 8163, 13605, 23355, 24489, 40815, 122445, 156911, 470733, 784555, 1412199, 2353665, 4236597, 7060995, 21182985]

約数ペア:

[(1, 21182985), (3, 7060995), (5, 4236597), (9, 2353665), (15, 1412199), (27, 784555), (45, 470733), (135, 156911), (173, 122445), (519, 40815), (865, 24489), (907, 23355), (1557, 13605), (2595, 8163), (2721, 7785), (4535, 4671)]