4989440

素因数分解:

$2^9\times 5^1\times {\mathrm{1949}}^1$

素因数の和:1972

約数の個数: 40

約数和(自身を含む): 11969100

約数和(自身を除く): 6979660

約数列:

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

約数ペア:

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