27978993

素因数分解:

$3^3\times 7^1\times {\mathrm{37}}^1\times {\mathrm{4001}}^1$

素因数の和:4054

約数の個数: 32

約数和(自身を含む): 48664320

約数和(自身を除く): 20685327

約数列:

[1, 3, 7, 9, 21, 27, 37, 63, 111, 189, 259, 333, 777, 999, 2331, 4001, 6993, 12003, 28007, 36009, 84021, 108027, 148037, 252063, 444111, 756189, 1036259, 1332333, 3108777, 3996999, 9326331, 27978993]

約数ペア:

[(1, 27978993), (3, 9326331), (7, 3996999), (9, 3108777), (21, 1332333), (27, 1036259), (37, 756189), (63, 444111), (111, 252063), (189, 148037), (259, 108027), (333, 84021), (777, 36009), (999, 28007), (2331, 12003), (4001, 6993)]