21390794

素因数分解:

$2^1\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{7069}}^1$

素因数の和:7177

約数の個数: 16

約数和(自身を含む): 34360200

約数和(自身を除く): 12969406

約数列:

[1, 2, 17, 34, 89, 178, 1513, 3026, 7069, 14138, 120173, 240346, 629141, 1258282, 10695397, 21390794]

約数ペア:

[(1, 21390794), (2, 10695397), (17, 1258282), (34, 629141), (89, 240346), (178, 120173), (1513, 14138), (3026, 7069)]