17964980

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{2207}}^1$

素因数の和:2264

約数の個数: 48

約数和(自身を含む): 42287616

約数和(自身を除く): 24322636

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 37, 44, 55, 74, 110, 148, 185, 220, 370, 407, 740, 814, 1628, 2035, 2207, 4070, 4414, 8140, 8828, 11035, 22070, 24277, 44140, 48554, 81659, 97108, 121385, 163318, 242770, 326636, 408295, 485540, 816590, 898249, 1633180, 1796498, 3592996, 4491245, 8982490, 17964980]

約数ペア:

[(1, 17964980), (2, 8982490), (4, 4491245), (5, 3592996), (10, 1796498), (11, 1633180), (20, 898249), (22, 816590), (37, 485540), (44, 408295), (55, 326636), (74, 242770), (110, 163318), (148, 121385), (185, 97108), (220, 81659), (370, 48554), (407, 44140), (740, 24277), (814, 22070), (1628, 11035), (2035, 8828), (2207, 8140), (4070, 4414)]