20972392

素因数分解:

$2^3\times 7^3\times {\mathrm{7643}}^1$

素因数の和:7670

約数の個数: 32

約数和(自身を含む): 45864000

約数和(自身を除く): 24891608

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 196, 343, 392, 686, 1372, 2744, 7643, 15286, 30572, 53501, 61144, 107002, 214004, 374507, 428008, 749014, 1498028, 2621549, 2996056, 5243098, 10486196, 20972392]

約数ペア:

[(1, 20972392), (2, 10486196), (4, 5243098), (7, 2996056), (8, 2621549), (14, 1498028), (28, 749014), (49, 428008), (56, 374507), (98, 214004), (196, 107002), (343, 61144), (392, 53501), (686, 30572), (1372, 15286), (2744, 7643)]