21580636

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{70067}}^1$

素因数の和:70089

約数の個数: 24

約数和(自身を含む): 47085696

約数和(自身を除く): 25505060

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 308, 70067, 140134, 280268, 490469, 770737, 980938, 1541474, 1961876, 3082948, 5395159, 10790318, 21580636]

約数ペア:

[(1, 21580636), (2, 10790318), (4, 5395159), (7, 3082948), (11, 1961876), (14, 1541474), (22, 980938), (28, 770737), (44, 490469), (77, 280268), (154, 140134), (308, 70067)]