4025980

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{149}}^1\times {\mathrm{193}}^1$

素因数の和:358

約数の個数: 48

約数和(自身を含む): 9777600

約数和(自身を除く): 5751620

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 149, 193, 298, 386, 596, 745, 772, 965, 1043, 1351, 1490, 1930, 2086, 2702, 2980, 3860, 4172, 5215, 5404, 6755, 10430, 13510, 20860, 27020, 28757, 57514, 115028, 143785, 201299, 287570, 402598, 575140, 805196, 1006495, 2012990, 4025980]

約数ペア:

[(1, 4025980), (2, 2012990), (4, 1006495), (5, 805196), (7, 575140), (10, 402598), (14, 287570), (20, 201299), (28, 143785), (35, 115028), (70, 57514), (140, 28757), (149, 27020), (193, 20860), (298, 13510), (386, 10430), (596, 6755), (745, 5404), (772, 5215), (965, 4172), (1043, 3860), (1351, 2980), (1490, 2702), (1930, 2086)]