21291141

素因数分解:

$3^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{4871}}^1$

素因数の和:4952

約数の個数: 16

約数和(自身を含む): 29933568

約数和(自身を除く): 8642427

約数列:

[1, 3, 31, 47, 93, 141, 1457, 4371, 4871, 14613, 151001, 228937, 453003, 686811, 7097047, 21291141]

約数ペア:

[(1, 21291141), (3, 7097047), (31, 686811), (47, 453003), (93, 228937), (141, 151001), (1457, 14613), (4371, 4871)]