64642640

素因数分解:

$2^4\times 5^1\times {\mathrm{317}}^1\times {\mathrm{2549}}^1$

素因数の和:2879

約数の個数: 40

約数和(自身を含む): 150827400

約数和(自身を除く): 86184760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 317, 634, 1268, 1585, 2536, 2549, 3170, 5072, 5098, 6340, 10196, 12680, 12745, 20392, 25360, 25490, 40784, 50980, 101960, 203920, 808033, 1616066, 3232132, 4040165, 6464264, 8080330, 12928528, 16160660, 32321320, 64642640]

約数ペア:

[(1, 64642640), (2, 32321320), (4, 16160660), (5, 12928528), (8, 8080330), (10, 6464264), (16, 4040165), (20, 3232132), (40, 1616066), (80, 808033), (317, 203920), (634, 101960), (1268, 50980), (1585, 40784), (2536, 25490), (2549, 25360), (3170, 20392), (5072, 12745), (5098, 12680), (6340, 10196)]