16787540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{11}}^2\times {\mathrm{991}}^1$

素因数の和:1029

約数の個数: 72

約数和(自身を含む): 44330496

約数和(自身を除く): 27542956

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, 991, 1210, 1540, 1694, 1982, 2420, 3388, 3964, 4235, 4955, 6937, 8470, 9910, 10901, 13874, 16940, 19820, 21802, 27748, 34685, 43604, 54505, 69370, 76307, 109010, 119911, 138740, 152614, 218020, 239822, 305228, 381535, 479644, 599555, 763070, 839377, 1199110, 1526140, 1678754, 2398220, 3357508, 4196885, 8393770, 16787540]

約数ペア:

[(1, 16787540), (2, 8393770), (4, 4196885), (5, 3357508), (7, 2398220), (10, 1678754), (11, 1526140), (14, 1199110), (20, 839377), (22, 763070), (28, 599555), (35, 479644), (44, 381535), (55, 305228), (70, 239822), (77, 218020), (110, 152614), (121, 138740), (140, 119911), (154, 109010), (220, 76307), (242, 69370), (308, 54505), (385, 43604), (484, 34685), (605, 27748), (770, 21802), (847, 19820), (991, 16940), (1210, 13874), (1540, 10901), (1694, 9910), (1982, 8470), (2420, 6937), (3388, 4955), (3964, 4235)]