20512497880

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2363191}}^1$

素因数の和:2363240

約数の個数: 64

約数和(自身を含む): 54447943680

約数和(自身を除く): 33935445800

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 31, 35, 40, 56, 62, 70, 124, 140, 155, 217, 248, 280, 310, 434, 620, 868, 1085, 1240, 1736, 2170, 4340, 8680, 2363191, 4726382, 9452764, 11815955, 16542337, 18905528, 23631910, 33084674, 47263820, 66169348, 73258921, 82711685, 94527640, 132338696, 146517842, 165423370, 293035684, 330846740, 366294605, 512812447, 586071368, 661693480, 732589210, 1025624894, 1465178420, 2051249788, 2564062235, 2930356840, 4102499576, 5128124470, 10256248940, 20512497880]

約数ペア:

[(1, 20512497880), (2, 10256248940), (4, 5128124470), (5, 4102499576), (7, 2930356840), (8, 2564062235), (10, 2051249788), (14, 1465178420), (20, 1025624894), (28, 732589210), (31, 661693480), (35, 586071368), (40, 512812447), (56, 366294605), (62, 330846740), (70, 293035684), (124, 165423370), (140, 146517842), (155, 132338696), (217, 94527640), (248, 82711685), (280, 73258921), (310, 66169348), (434, 47263820), (620, 33084674), (868, 23631910), (1085, 18905528), (1240, 16542337), (1736, 11815955), (2170, 9452764), (4340, 4726382), (8680, 2363191)]