1018880

素因数分解:

$2^{10}\times 5^1\times {\mathrm{199}}^1$

素因数の和:224

約数の個数: 44

約数和(自身を含む): 2456400

約数和(自身を除く): 1437520

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 199, 256, 320, 398, 512, 640, 796, 995, 1024, 1280, 1592, 1990, 2560, 3184, 3980, 5120, 6368, 7960, 12736, 15920, 25472, 31840, 50944, 63680, 101888, 127360, 203776, 254720, 509440, 1018880]

約数ペア:

[(1, 1018880), (2, 509440), (4, 254720), (5, 203776), (8, 127360), (10, 101888), (16, 63680), (20, 50944), (32, 31840), (40, 25472), (64, 15920), (80, 12736), (128, 7960), (160, 6368), (199, 5120), (256, 3980), (320, 3184), (398, 2560), (512, 1990), (640, 1592), (796, 1280), (995, 1024)]