20691568

素因数分解:

$2^4\times {\mathrm{83}}^1\times {\mathrm{15581}}^1$

素因数の和:15672

約数の個数: 20

約数和(自身を含む): 40575528

約数和(自身を除く): 19883960

約数列:

[1, 2, 4, 8, 16, 83, 166, 332, 664, 1328, 15581, 31162, 62324, 124648, 249296, 1293223, 2586446, 5172892, 10345784, 20691568]

約数ペア:

[(1, 20691568), (2, 10345784), (4, 5172892), (8, 2586446), (16, 1293223), (83, 249296), (166, 124648), (332, 62324), (664, 31162), (1328, 15581)]