128257480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^2\times {\mathrm{18973}}^1$

素因数の和:19010

約数の個数: 48

約数和(自身を含む): 312501780

約数和(自身を除く): 184244300

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 169, 260, 338, 520, 676, 845, 1352, 1690, 3380, 6760, 18973, 37946, 75892, 94865, 151784, 189730, 246649, 379460, 493298, 758920, 986596, 1233245, 1973192, 2466490, 3206437, 4932980, 6412874, 9865960, 12825748, 16032185, 25651496, 32064370, 64128740, 128257480]

約数ペア:

[(1, 128257480), (2, 64128740), (4, 32064370), (5, 25651496), (8, 16032185), (10, 12825748), (13, 9865960), (20, 6412874), (26, 4932980), (40, 3206437), (52, 2466490), (65, 1973192), (104, 1233245), (130, 986596), (169, 758920), (260, 493298), (338, 379460), (520, 246649), (676, 189730), (845, 151784), (1352, 94865), (1690, 75892), (3380, 37946), (6760, 18973)]