12805400

素因数分解:

$2^3\times 5^2\times {\mathrm{43}}^1\times {\mathrm{1489}}^1$

素因数の和:1548

約数の個数: 48

約数和(自身を含む): 30485400

約数和(自身を除く): 17680000

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 172, 200, 215, 344, 430, 860, 1075, 1489, 1720, 2150, 2978, 4300, 5956, 7445, 8600, 11912, 14890, 29780, 37225, 59560, 64027, 74450, 128054, 148900, 256108, 297800, 320135, 512216, 640270, 1280540, 1600675, 2561080, 3201350, 6402700, 12805400]

約数ペア:

[(1, 12805400), (2, 6402700), (4, 3201350), (5, 2561080), (8, 1600675), (10, 1280540), (20, 640270), (25, 512216), (40, 320135), (43, 297800), (50, 256108), (86, 148900), (100, 128054), (172, 74450), (200, 64027), (215, 59560), (344, 37225), (430, 29780), (860, 14890), (1075, 11912), (1489, 8600), (1720, 7445), (2150, 5956), (2978, 4300)]