27440

素因数分解:

$2^4\times 5^1\times 7^3$

素因数の和:34

約数の個数: 40

約数和(自身を含む): 74400

約数和(自身を除く): 46960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 343, 392, 490, 560, 686, 784, 980, 1372, 1715, 1960, 2744, 3430, 3920, 5488, 6860, 13720, 27440]

約数ペア:

[(1, 27440), (2, 13720), (4, 6860), (5, 5488), (7, 3920), (8, 3430), (10, 2744), (14, 1960), (16, 1715), (20, 1372), (28, 980), (35, 784), (40, 686), (49, 560), (56, 490), (70, 392), (80, 343), (98, 280), (112, 245), (140, 196)]