128806280

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{189421}}^1$

素因数の和:189449

約数の個数: 32

約数和(自身を含む): 306863640

約数和(自身を除く): 178057360

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 340, 680, 189421, 378842, 757684, 947105, 1515368, 1894210, 3220157, 3788420, 6440314, 7576840, 12880628, 16100785, 25761256, 32201570, 64403140, 128806280]

約数ペア:

[(1, 128806280), (2, 64403140), (4, 32201570), (5, 25761256), (8, 16100785), (10, 12880628), (17, 7576840), (20, 6440314), (34, 3788420), (40, 3220157), (68, 1894210), (85, 1515368), (136, 947105), (170, 757684), (340, 378842), (680, 189421)]