20580016

素因数分解:

$2^4\times {\mathrm{83}}^1\times {\mathrm{15497}}^1$

素因数の和:15588

約数の個数: 20

約数和(自身を含む): 40356792

約数和(自身を除く): 19776776

約数列:

[1, 2, 4, 8, 16, 83, 166, 332, 664, 1328, 15497, 30994, 61988, 123976, 247952, 1286251, 2572502, 5145004, 10290008, 20580016]

約数ペア:

[(1, 20580016), (2, 10290008), (4, 5145004), (8, 2572502), (16, 1286251), (83, 247952), (166, 123976), (332, 61988), (664, 30994), (1328, 15497)]