20832147

素因数分解:

$3^5\times 7^1\times {\mathrm{37}}^1\times {\mathrm{331}}^1$

素因数の和:390

約数の個数: 48

約数和(自身を含む): 36737792

約数和(自身を除く): 15905645

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 81, 111, 189, 243, 259, 331, 333, 567, 777, 993, 999, 1701, 2317, 2331, 2979, 2997, 6951, 6993, 8937, 8991, 12247, 20853, 20979, 26811, 36741, 62559, 62937, 80433, 85729, 110223, 187677, 257187, 330669, 563031, 771561, 992007, 2314683, 2976021, 6944049, 20832147]

約数ペア:

[(1, 20832147), (3, 6944049), (7, 2976021), (9, 2314683), (21, 992007), (27, 771561), (37, 563031), (63, 330669), (81, 257187), (111, 187677), (189, 110223), (243, 85729), (259, 80433), (331, 62937), (333, 62559), (567, 36741), (777, 26811), (993, 20979), (999, 20853), (1701, 12247), (2317, 8991), (2331, 8937), (2979, 6993), (2997, 6951)]