20675590

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1\times {\mathrm{1787}}^1$

素因数の和:1896

約数の個数: 32

約数和(自身を含む): 40551840

約数和(自身を除く): 19876250

約数列:

[1, 2, 5, 10, 13, 26, 65, 89, 130, 178, 445, 890, 1157, 1787, 2314, 3574, 5785, 8935, 11570, 17870, 23231, 46462, 116155, 159043, 232310, 318086, 795215, 1590430, 2067559, 4135118, 10337795, 20675590]

約数ペア:

[(1, 20675590), (2, 10337795), (5, 4135118), (10, 2067559), (13, 1590430), (26, 795215), (65, 318086), (89, 232310), (130, 159043), (178, 116155), (445, 46462), (890, 23231), (1157, 17870), (1787, 11570), (2314, 8935), (3574, 5785)]