18129920

素因数分解:

$2^{10}\times 5^1\times {\mathrm{3541}}^1$

素因数の和:3566

約数の個数: 44

約数和(自身を含む): 43502844

約数和(自身を除く): 25372924

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 2560, 3541, 5120, 7082, 14164, 17705, 28328, 35410, 56656, 70820, 113312, 141640, 226624, 283280, 453248, 566560, 906496, 1133120, 1812992, 2266240, 3625984, 4532480, 9064960, 18129920]

約数ペア:

[(1, 18129920), (2, 9064960), (4, 4532480), (5, 3625984), (8, 2266240), (10, 1812992), (16, 1133120), (20, 906496), (32, 566560), (40, 453248), (64, 283280), (80, 226624), (128, 141640), (160, 113312), (256, 70820), (320, 56656), (512, 35410), (640, 28328), (1024, 17705), (1280, 14164), (2560, 7082), (3541, 5120)]