128747840

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{30949}}^1$

素因数の和:30979

約数の個数: 56

約数和(自身を含む): 330174600

約数和(自身を除く): 201426760

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 30949, 61898, 123796, 154745, 247592, 309490, 402337, 495184, 618980, 804674, 990368, 1237960, 1609348, 1980736, 2011685, 2475920, 3218696, 4023370, 4951840, 6437392, 8046740, 9903680, 12874784, 16093480, 25749568, 32186960, 64373920, 128747840]

約数ペア:

[(1, 128747840), (2, 64373920), (4, 32186960), (5, 25749568), (8, 16093480), (10, 12874784), (13, 9903680), (16, 8046740), (20, 6437392), (26, 4951840), (32, 4023370), (40, 3218696), (52, 2475920), (64, 2011685), (65, 1980736), (80, 1609348), (104, 1237960), (130, 990368), (160, 804674), (208, 618980), (260, 495184), (320, 402337), (416, 309490), (520, 247592), (832, 154745), (1040, 123796), (2080, 61898), (4160, 30949)]