205807840

素因数分解:

$2^5\times 5^1\times 7^2\times {\mathrm{26251}}^1$

素因数の和:26280

約数の個数: 72

約数和(自身を含む): 565625592

約数和(自身を除く): 359817752

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 49, 56, 70, 80, 98, 112, 140, 160, 196, 224, 245, 280, 392, 490, 560, 784, 980, 1120, 1568, 1960, 3920, 7840, 26251, 52502, 105004, 131255, 183757, 210008, 262510, 367514, 420016, 525020, 735028, 840032, 918785, 1050040, 1286299, 1470056, 1837570, 2100080, 2572598, 2940112, 3675140, 4200160, 5145196, 5880224, 6431495, 7350280, 10290392, 12862990, 14700560, 20580784, 25725980, 29401120, 41161568, 51451960, 102903920, 205807840]

約数ペア:

[(1, 205807840), (2, 102903920), (4, 51451960), (5, 41161568), (7, 29401120), (8, 25725980), (10, 20580784), (14, 14700560), (16, 12862990), (20, 10290392), (28, 7350280), (32, 6431495), (35, 5880224), (40, 5145196), (49, 4200160), (56, 3675140), (70, 2940112), (80, 2572598), (98, 2100080), (112, 1837570), (140, 1470056), (160, 1286299), (196, 1050040), (224, 918785), (245, 840032), (280, 735028), (392, 525020), (490, 420016), (560, 367514), (784, 262510), (980, 210008), (1120, 183757), (1568, 131255), (1960, 105004), (3920, 52502), (7840, 26251)]