81721808

素因数分解:

$2^4\times 7^3\times {\mathrm{14891}}^1$

素因数の和:14920

約数の個数: 40

約数和(自身を含む): 184660800

約数和(自身を除く): 102938992

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 49, 56, 98, 112, 196, 343, 392, 686, 784, 1372, 2744, 5488, 14891, 29782, 59564, 104237, 119128, 208474, 238256, 416948, 729659, 833896, 1459318, 1667792, 2918636, 5107613, 5837272, 10215226, 11674544, 20430452, 40860904, 81721808]

約数ペア:

[(1, 81721808), (2, 40860904), (4, 20430452), (7, 11674544), (8, 10215226), (14, 5837272), (16, 5107613), (28, 2918636), (49, 1667792), (56, 1459318), (98, 833896), (112, 729659), (196, 416948), (343, 238256), (392, 208474), (686, 119128), (784, 104237), (1372, 59564), (2744, 29782), (5488, 14891)]