90881780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{439}}^1\times {\mathrm{941}}^1$

素因数の和:1400

約数の個数: 48

約数和(自身を含む): 208897920

約数和(自身を除く): 118016140

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 439, 878, 941, 1756, 1882, 2195, 3764, 4390, 4705, 4829, 8780, 9410, 9658, 10351, 18820, 19316, 20702, 24145, 41404, 48290, 51755, 96580, 103510, 207020, 413099, 826198, 1652396, 2065495, 4130990, 4544089, 8261980, 9088178, 18176356, 22720445, 45440890, 90881780]

約数ペア:

[(1, 90881780), (2, 45440890), (4, 22720445), (5, 18176356), (10, 9088178), (11, 8261980), (20, 4544089), (22, 4130990), (44, 2065495), (55, 1652396), (110, 826198), (220, 413099), (439, 207020), (878, 103510), (941, 96580), (1756, 51755), (1882, 48290), (2195, 41404), (3764, 24145), (4390, 20702), (4705, 19316), (4829, 18820), (8780, 10351), (9410, 9658)]