12745900

素因数分解:

$2^2\times 5^2\times {\mathrm{197}}^1\times {\mathrm{647}}^1$

素因数の和:858

約数の個数: 36

約数和(自身を含む): 27841968

約数和(自身を除く): 15096068

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 197, 394, 647, 788, 985, 1294, 1970, 2588, 3235, 3940, 4925, 6470, 9850, 12940, 16175, 19700, 32350, 64700, 127459, 254918, 509836, 637295, 1274590, 2549180, 3186475, 6372950, 12745900]

約数ペア:

[(1, 12745900), (2, 6372950), (4, 3186475), (5, 2549180), (10, 1274590), (20, 637295), (25, 509836), (50, 254918), (100, 127459), (197, 64700), (394, 32350), (647, 19700), (788, 16175), (985, 12940), (1294, 9850), (1970, 6470), (2588, 4925), (3235, 3940)]