9978880

素因数分解:

$2^{10}\times 5^1\times {\mathrm{1949}}^1$

素因数の和:1974

約数の個数: 44

約数和(自身を含む): 23949900

約数和(自身を除く): 13971020

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 512, 640, 1024, 1280, 1949, 2560, 3898, 5120, 7796, 9745, 15592, 19490, 31184, 38980, 62368, 77960, 124736, 155920, 249472, 311840, 498944, 623680, 997888, 1247360, 1995776, 2494720, 4989440, 9978880]

約数ペア:

[(1, 9978880), (2, 4989440), (4, 2494720), (5, 1995776), (8, 1247360), (10, 997888), (16, 623680), (20, 498944), (32, 311840), (40, 249472), (64, 155920), (80, 124736), (128, 77960), (160, 62368), (256, 38980), (320, 31184), (512, 19490), (640, 15592), (1024, 9745), (1280, 7796), (1949, 5120), (2560, 3898)]