18688880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{1451}}^1$

素因数の和:1494

約数の個数: 80

約数和(自身を含む): 51853824

約数和(自身を除く): 33164944

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 35, 40, 46, 56, 70, 80, 92, 112, 115, 140, 161, 184, 230, 280, 322, 368, 460, 560, 644, 805, 920, 1288, 1451, 1610, 1840, 2576, 2902, 3220, 5804, 6440, 7255, 10157, 11608, 12880, 14510, 20314, 23216, 29020, 33373, 40628, 50785, 58040, 66746, 81256, 101570, 116080, 133492, 162512, 166865, 203140, 233611, 266984, 333730, 406280, 467222, 533968, 667460, 812560, 934444, 1168055, 1334920, 1868888, 2336110, 2669840, 3737776, 4672220, 9344440, 18688880]

約数ペア:

[(1, 18688880), (2, 9344440), (4, 4672220), (5, 3737776), (7, 2669840), (8, 2336110), (10, 1868888), (14, 1334920), (16, 1168055), (20, 934444), (23, 812560), (28, 667460), (35, 533968), (40, 467222), (46, 406280), (56, 333730), (70, 266984), (80, 233611), (92, 203140), (112, 166865), (115, 162512), (140, 133492), (161, 116080), (184, 101570), (230, 81256), (280, 66746), (322, 58040), (368, 50785), (460, 40628), (560, 33373), (644, 29020), (805, 23216), (920, 20314), (1288, 14510), (1451, 12880), (1610, 11608), (1840, 10157), (2576, 7255), (2902, 6440), (3220, 5804)]