21022905

素因数分解:

$3^1\times 5^1\times {\mathrm{73}}^2\times {\mathrm{263}}^1$

素因数の和:417

約数の個数: 24

約数和(自身を含む): 34233408

約数和(自身を除く): 13210503

約数列:

[1, 3, 5, 15, 73, 219, 263, 365, 789, 1095, 1315, 3945, 5329, 15987, 19199, 26645, 57597, 79935, 95995, 287985, 1401527, 4204581, 7007635, 21022905]

約数ペア:

[(1, 21022905), (3, 7007635), (5, 4204581), (15, 1401527), (73, 287985), (219, 95995), (263, 79935), (365, 57597), (789, 26645), (1095, 19199), (1315, 15987), (3945, 5329)]