17964560

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{5477}}^1$

素因数の和:5531

約数の個数: 40

約数和(自身を含む): 42794136

約数和(自身を除く): 24829576

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 5477, 10954, 21908, 27385, 43816, 54770, 87632, 109540, 219080, 224557, 438160, 449114, 898228, 1122785, 1796456, 2245570, 3592912, 4491140, 8982280, 17964560]

約数ペア:

[(1, 17964560), (2, 8982280), (4, 4491140), (5, 3592912), (8, 2245570), (10, 1796456), (16, 1122785), (20, 898228), (40, 449114), (41, 438160), (80, 224557), (82, 219080), (164, 109540), (205, 87632), (328, 54770), (410, 43816), (656, 27385), (820, 21908), (1640, 10954), (3280, 5477)]