18208640

素因数分解:

$2^7\times 5^1\times {\mathrm{23}}^1\times {\mathrm{1237}}^1$

素因数の和:1279

約数の個数: 64

約数和(自身を含む): 45459360

約数和(自身を除く): 27250720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 64, 80, 92, 115, 128, 160, 184, 230, 320, 368, 460, 640, 736, 920, 1237, 1472, 1840, 2474, 2944, 3680, 4948, 6185, 7360, 9896, 12370, 14720, 19792, 24740, 28451, 39584, 49480, 56902, 79168, 98960, 113804, 142255, 158336, 197920, 227608, 284510, 395840, 455216, 569020, 791680, 910432, 1138040, 1820864, 2276080, 3641728, 4552160, 9104320, 18208640]

約数ペア:

[(1, 18208640), (2, 9104320), (4, 4552160), (5, 3641728), (8, 2276080), (10, 1820864), (16, 1138040), (20, 910432), (23, 791680), (32, 569020), (40, 455216), (46, 395840), (64, 284510), (80, 227608), (92, 197920), (115, 158336), (128, 142255), (160, 113804), (184, 98960), (230, 79168), (320, 56902), (368, 49480), (460, 39584), (640, 28451), (736, 24740), (920, 19792), (1237, 14720), (1472, 12370), (1840, 9896), (2474, 7360), (2944, 6185), (3680, 4948)]