20597860

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^2\times {\mathrm{557}}^1$

素因数の和:652

約数の個数: 36

約数和(自身を含む): 44364348

約数和(自身を除く): 23766488

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 557, 860, 1114, 1849, 2228, 2785, 3698, 5570, 7396, 9245, 11140, 18490, 23951, 36980, 47902, 95804, 119755, 239510, 479020, 1029893, 2059786, 4119572, 5149465, 10298930, 20597860]

約数ペア:

[(1, 20597860), (2, 10298930), (4, 5149465), (5, 4119572), (10, 2059786), (20, 1029893), (43, 479020), (86, 239510), (172, 119755), (215, 95804), (430, 47902), (557, 36980), (860, 23951), (1114, 18490), (1849, 11140), (2228, 9245), (2785, 7396), (3698, 5570)]