19490680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^2\times {\mathrm{4027}}^1$

素因数の和:4060

約数の個数: 48

約数和(自身を含む): 48215160

約数和(自身を除く): 28724480

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 121, 220, 242, 440, 484, 605, 968, 1210, 2420, 4027, 4840, 8054, 16108, 20135, 32216, 40270, 44297, 80540, 88594, 161080, 177188, 221485, 354376, 442970, 487267, 885940, 974534, 1771880, 1949068, 2436335, 3898136, 4872670, 9745340, 19490680]

約数ペア:

[(1, 19490680), (2, 9745340), (4, 4872670), (5, 3898136), (8, 2436335), (10, 1949068), (11, 1771880), (20, 974534), (22, 885940), (40, 487267), (44, 442970), (55, 354376), (88, 221485), (110, 177188), (121, 161080), (220, 88594), (242, 80540), (440, 44297), (484, 40270), (605, 32216), (968, 20135), (1210, 16108), (2420, 8054), (4027, 4840)]