20907590

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{467}}^1$

素因数の和:533

約数の個数: 48

約数和(自身を含む): 42574896

約数和(自身を除く): 21667306

約数列:

[1, 2, 5, 10, 11, 22, 37, 55, 74, 110, 121, 185, 242, 370, 407, 467, 605, 814, 934, 1210, 2035, 2335, 4070, 4477, 4670, 5137, 8954, 10274, 17279, 22385, 25685, 34558, 44770, 51370, 56507, 86395, 113014, 172790, 190069, 282535, 380138, 565070, 950345, 1900690, 2090759, 4181518, 10453795, 20907590]

約数ペア:

[(1, 20907590), (2, 10453795), (5, 4181518), (10, 2090759), (11, 1900690), (22, 950345), (37, 565070), (55, 380138), (74, 282535), (110, 190069), (121, 172790), (185, 113014), (242, 86395), (370, 56507), (407, 51370), (467, 44770), (605, 34558), (814, 25685), (934, 22385), (1210, 17279), (2035, 10274), (2335, 8954), (4070, 5137), (4477, 4670)]