12879400

素因数分解:

$2^3\times 5^2\times {\mathrm{71}}^1\times {\mathrm{907}}^1$

素因数の和:994

約数の個数: 48

約数和(自身を含む): 30399840

約数和(自身を除く): 17520440

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 71, 100, 142, 200, 284, 355, 568, 710, 907, 1420, 1775, 1814, 2840, 3550, 3628, 4535, 7100, 7256, 9070, 14200, 18140, 22675, 36280, 45350, 64397, 90700, 128794, 181400, 257588, 321985, 515176, 643970, 1287940, 1609925, 2575880, 3219850, 6439700, 12879400]

約数ペア:

[(1, 12879400), (2, 6439700), (4, 3219850), (5, 2575880), (8, 1609925), (10, 1287940), (20, 643970), (25, 515176), (40, 321985), (50, 257588), (71, 181400), (100, 128794), (142, 90700), (200, 64397), (284, 45350), (355, 36280), (568, 22675), (710, 18140), (907, 14200), (1420, 9070), (1775, 7256), (1814, 7100), (2840, 4535), (3550, 3628)]