21220434

素因数分解:

$2^1\times 3^3\times {\mathrm{157}}^1\times {\mathrm{2503}}^1$

素因数の和:2671

約数の個数: 32

約数和(自身を含む): 47475840

約数和(自身を除く): 26255406

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 157, 314, 471, 942, 1413, 2503, 2826, 4239, 5006, 7509, 8478, 15018, 22527, 45054, 67581, 135162, 392971, 785942, 1178913, 2357826, 3536739, 7073478, 10610217, 21220434]

約数ペア:

[(1, 21220434), (2, 10610217), (3, 7073478), (6, 3536739), (9, 2357826), (18, 1178913), (27, 785942), (54, 392971), (157, 135162), (314, 67581), (471, 45054), (942, 22527), (1413, 15018), (2503, 8478), (2826, 7509), (4239, 5006)]