20666647540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{1219991}}^1$

素因数の和:1220029

約数の個数: 72

約数和(自身を含む): 54519002496

約数和(自身を除く): 33852354956

約数列:

[1, 2, 4, 5, 7, 10, 11, 14, 20, 22, 28, 35, 44, 55, 70, 77, 110, 121, 140, 154, 220, 242, 308, 385, 484, 605, 770, 847, 1210, 1540, 1694, 2420, 3388, 4235, 8470, 16940, 1219991, 2439982, 4879964, 6099955, 8539937, 12199910, 13419901, 17079874, 24399820, 26839802, 34159748, 42699685, 53679604, 67099505, 85399370, 93939307, 134199010, 147618911, 170798740, 187878614, 268398020, 295237822, 375757228, 469696535, 590475644, 738094555, 939393070, 1033332377, 1476189110, 1878786140, 2066664754, 2952378220, 4133329508, 5166661885, 10333323770, 20666647540]

約数ペア:

[(1, 20666647540), (2, 10333323770), (4, 5166661885), (5, 4133329508), (7, 2952378220), (10, 2066664754), (11, 1878786140), (14, 1476189110), (20, 1033332377), (22, 939393070), (28, 738094555), (35, 590475644), (44, 469696535), (55, 375757228), (70, 295237822), (77, 268398020), (110, 187878614), (121, 170798740), (140, 147618911), (154, 134199010), (220, 93939307), (242, 85399370), (308, 67099505), (385, 53679604), (484, 42699685), (605, 34159748), (770, 26839802), (847, 24399820), (1210, 17079874), (1540, 13419901), (1694, 12199910), (2420, 8539937), (3388, 6099955), (4235, 4879964), (8470, 2439982), (16940, 1219991)]