18217953

素因数分解:

$3^5\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{79}}^1$

素因数の和:180

約数の個数: 48

約数和(自身を含む): 30168320

約数和(自身を除く): 11950367

約数列:

[1, 3, 9, 13, 27, 39, 73, 79, 81, 117, 219, 237, 243, 351, 657, 711, 949, 1027, 1053, 1971, 2133, 2847, 3081, 3159, 5767, 5913, 6399, 8541, 9243, 17301, 17739, 19197, 25623, 27729, 51903, 74971, 76869, 83187, 155709, 224913, 230607, 249561, 467127, 674739, 1401381, 2024217, 6072651, 18217953]

約数ペア:

[(1, 18217953), (3, 6072651), (9, 2024217), (13, 1401381), (27, 674739), (39, 467127), (73, 249561), (79, 230607), (81, 224913), (117, 155709), (219, 83187), (237, 76869), (243, 74971), (351, 51903), (657, 27729), (711, 25623), (949, 19197), (1027, 17739), (1053, 17301), (1971, 9243), (2133, 8541), (2847, 6399), (3081, 5913), (3159, 5767)]