13720

素因数分解:

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

素因数の和:32

約数の個数: 32

約数和(自身を含む): 36000

約数和(自身を除く): 22280

約数列:

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

約数ペア:

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