20787401565

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{179}}^1\times {\mathrm{52667}}^1$

素因数の和:52871

約数の個数: 72

約数和(自身を含む): 42149147040

約数和(自身を除く): 21361745475

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 49, 63, 105, 147, 179, 245, 315, 441, 537, 735, 895, 1253, 1611, 2205, 2685, 3759, 6265, 8055, 8771, 11277, 18795, 26313, 43855, 52667, 56385, 78939, 131565, 158001, 263335, 368669, 394695, 474003, 790005, 1106007, 1843345, 2370015, 2580683, 3318021, 5530035, 7742049, 9427393, 12903415, 16590105, 23226147, 28282179, 38710245, 47136965, 65991751, 84846537, 116130735, 141410895, 197975253, 329958755, 424232685, 461942257, 593925759, 989876265, 1385826771, 2309711285, 2969628795, 4157480313, 6929133855, 20787401565]

約数ペア:

[(1, 20787401565), (3, 6929133855), (5, 4157480313), (7, 2969628795), (9, 2309711285), (15, 1385826771), (21, 989876265), (35, 593925759), (45, 461942257), (49, 424232685), (63, 329958755), (105, 197975253), (147, 141410895), (179, 116130735), (245, 84846537), (315, 65991751), (441, 47136965), (537, 38710245), (735, 28282179), (895, 23226147), (1253, 16590105), (1611, 12903415), (2205, 9427393), (2685, 7742049), (3759, 5530035), (6265, 3318021), (8055, 2580683), (8771, 2370015), (11277, 1843345), (18795, 1106007), (26313, 790005), (43855, 474003), (52667, 394695), (56385, 368669), (78939, 263335), (131565, 158001)]