20659540

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8537}}^1$

素因数の和:8568

約数の個数: 36

約数和(自身を含む): 47693268

約数和(自身を除く): 27033728

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8537, 17074, 34148, 42685, 85370, 93907, 170740, 187814, 375628, 469535, 939070, 1032977, 1878140, 2065954, 4131908, 5164885, 10329770, 20659540]

約数ペア:

[(1, 20659540), (2, 10329770), (4, 5164885), (5, 4131908), (10, 2065954), (11, 1878140), (20, 1032977), (22, 939070), (44, 469535), (55, 375628), (110, 187814), (121, 170740), (220, 93907), (242, 85370), (484, 42685), (605, 34148), (1210, 17074), (2420, 8537)]