640656912

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{61507}}^1$

素因数の和:61556

約数の個数: 80

約数和(自身を含む): 1952509952

約数和(自身を除く): 1311853040

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 31, 42, 48, 56, 62, 84, 93, 112, 124, 168, 186, 217, 248, 336, 372, 434, 496, 651, 744, 868, 1302, 1488, 1736, 2604, 3472, 5208, 10416, 61507, 123014, 184521, 246028, 369042, 430549, 492056, 738084, 861098, 984112, 1291647, 1476168, 1722196, 1906717, 2583294, 2952336, 3444392, 3813434, 5166588, 5720151, 6888784, 7626868, 10333176, 11440302, 13347019, 15253736, 20666352, 22880604, 26694038, 30507472, 40041057, 45761208, 53388076, 80082114, 91522416, 106776152, 160164228, 213552304, 320328456, 640656912]

約数ペア:

[(1, 640656912), (2, 320328456), (3, 213552304), (4, 160164228), (6, 106776152), (7, 91522416), (8, 80082114), (12, 53388076), (14, 45761208), (16, 40041057), (21, 30507472), (24, 26694038), (28, 22880604), (31, 20666352), (42, 15253736), (48, 13347019), (56, 11440302), (62, 10333176), (84, 7626868), (93, 6888784), (112, 5720151), (124, 5166588), (168, 3813434), (186, 3444392), (217, 2952336), (248, 2583294), (336, 1906717), (372, 1722196), (434, 1476168), (496, 1291647), (651, 984112), (744, 861098), (868, 738084), (1302, 492056), (1488, 430549), (1736, 369042), (2604, 246028), (3472, 184521), (5208, 123014), (10416, 61507)]