18978740

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{281}}^1\times {\mathrm{307}}^1$

素因数の和:608

約数の個数: 48

約数和(自身を含む): 43775424

約数和(自身を除く): 24796684

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 281, 307, 562, 614, 1124, 1228, 1405, 1535, 2810, 3070, 3091, 3377, 5620, 6140, 6182, 6754, 12364, 13508, 15455, 16885, 30910, 33770, 61820, 67540, 86267, 172534, 345068, 431335, 862670, 948937, 1725340, 1897874, 3795748, 4744685, 9489370, 18978740]

約数ペア:

[(1, 18978740), (2, 9489370), (4, 4744685), (5, 3795748), (10, 1897874), (11, 1725340), (20, 948937), (22, 862670), (44, 431335), (55, 345068), (110, 172534), (220, 86267), (281, 67540), (307, 61820), (562, 33770), (614, 30910), (1124, 16885), (1228, 15455), (1405, 13508), (1535, 12364), (2810, 6754), (3070, 6182), (3091, 6140), (3377, 5620)]