20865891

素因数分解:

$3^1\times {\mathrm{37}}^1\times {\mathrm{317}}^1\times {\mathrm{593}}^1$

素因数の和:950

約数の個数: 16

約数和(自身を含む): 28711584

約数和(自身を除く): 7845693

約数列:

[1, 3, 37, 111, 317, 593, 951, 1779, 11729, 21941, 35187, 65823, 187981, 563943, 6955297, 20865891]

約数ペア:

[(1, 20865891), (3, 6955297), (37, 563943), (111, 187981), (317, 65823), (593, 35187), (951, 21941), (1779, 11729)]