27978561

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{1009}}^1$

素因数の和:1110

約数の個数: 32

約数和(自身を含む): 45248000

約数和(自身を除く): 17269439

約数列:

[1, 3, 9, 13, 27, 39, 79, 117, 237, 351, 711, 1009, 1027, 2133, 3027, 3081, 9081, 9243, 13117, 27243, 27729, 39351, 79711, 118053, 239133, 354159, 717399, 1036243, 2152197, 3108729, 9326187, 27978561]

約数ペア:

[(1, 27978561), (3, 9326187), (9, 3108729), (13, 2152197), (27, 1036243), (39, 717399), (79, 354159), (117, 239133), (237, 118053), (351, 79711), (711, 39351), (1009, 27729), (1027, 27243), (2133, 13117), (3027, 9243), (3081, 9081)]