1278778900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{433}}^1\times {\mathrm{4219}}^1$

素因数の和:4673

約数の個数: 72

約数和(自身を含む): 3179449280

約数和(自身を除く): 1900670380

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 50, 70, 100, 140, 175, 350, 433, 700, 866, 1732, 2165, 3031, 4219, 4330, 6062, 8438, 8660, 10825, 12124, 15155, 16876, 21095, 21650, 29533, 30310, 42190, 43300, 59066, 60620, 75775, 84380, 105475, 118132, 147665, 151550, 210950, 295330, 303100, 421900, 590660, 738325, 1476650, 1826827, 2953300, 3653654, 7307308, 9134135, 12787789, 18268270, 25575578, 36536540, 45670675, 51151156, 63938945, 91341350, 127877890, 182682700, 255755780, 319694725, 639389450, 1278778900]

約数ペア:

[(1, 1278778900), (2, 639389450), (4, 319694725), (5, 255755780), (7, 182682700), (10, 127877890), (14, 91341350), (20, 63938945), (25, 51151156), (28, 45670675), (35, 36536540), (50, 25575578), (70, 18268270), (100, 12787789), (140, 9134135), (175, 7307308), (350, 3653654), (433, 2953300), (700, 1826827), (866, 1476650), (1732, 738325), (2165, 590660), (3031, 421900), (4219, 303100), (4330, 295330), (6062, 210950), (8438, 151550), (8660, 147665), (10825, 118132), (12124, 105475), (15155, 84380), (16876, 75775), (21095, 60620), (21650, 59066), (29533, 43300), (30310, 42190)]