51718400

素因数分解:

$2^8\times 5^2\times {\mathrm{8081}}^1$

素因数の和:8107

約数の個数: 54

約数和(自身を含む): 128026962

約数和(自身を除く): 76308562

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 640, 800, 1280, 1600, 3200, 6400, 8081, 16162, 32324, 40405, 64648, 80810, 129296, 161620, 202025, 258592, 323240, 404050, 517184, 646480, 808100, 1034368, 1292960, 1616200, 2068736, 2585920, 3232400, 5171840, 6464800, 10343680, 12929600, 25859200, 51718400]

約数ペア:

[(1, 51718400), (2, 25859200), (4, 12929600), (5, 10343680), (8, 6464800), (10, 5171840), (16, 3232400), (20, 2585920), (25, 2068736), (32, 1616200), (40, 1292960), (50, 1034368), (64, 808100), (80, 646480), (100, 517184), (128, 404050), (160, 323240), (200, 258592), (256, 202025), (320, 161620), (400, 129296), (640, 80810), (800, 64648), (1280, 40405), (1600, 32324), (3200, 16162), (6400, 8081)]