15987440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{28549}}^1$

素因数の和:28569

約数の個数: 40

約数和(自身を含む): 42482400

約数和(自身を除く): 26494960

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 28549, 57098, 114196, 142745, 199843, 228392, 285490, 399686, 456784, 570980, 799372, 999215, 1141960, 1598744, 1998430, 2283920, 3197488, 3996860, 7993720, 15987440]

約数ペア:

[(1, 15987440), (2, 7993720), (4, 3996860), (5, 3197488), (7, 2283920), (8, 1998430), (10, 1598744), (14, 1141960), (16, 999215), (20, 799372), (28, 570980), (35, 456784), (40, 399686), (56, 285490), (70, 228392), (80, 199843), (112, 142745), (140, 114196), (280, 57098), (560, 28549)]