20961808

素因数分解:

$2^4\times 7^2\times {\mathrm{26737}}^1$

素因数の和:26759

約数の個数: 30

約数和(自身を含む): 47246046

約数和(自身を除く): 26284238

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 392, 784, 26737, 53474, 106948, 187159, 213896, 374318, 427792, 748636, 1310113, 1497272, 2620226, 2994544, 5240452, 10480904, 20961808]

約数ペア:

[(1, 20961808), (2, 10480904), (4, 5240452), (7, 2994544), (8, 2620226), (14, 1497272), (16, 1310113), (28, 748636), (49, 427792), (56, 374318), (98, 213896), (112, 187159), (196, 106948), (392, 53474), (784, 26737)]