72131920

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{18401}}^1$

素因数の和:18428

約数の個数: 60

約数和(自身を含む): 195098004

約数和(自身を除く): 122966084

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 49, 56, 70, 80, 98, 112, 140, 196, 245, 280, 392, 490, 560, 784, 980, 1960, 3920, 18401, 36802, 73604, 92005, 128807, 147208, 184010, 257614, 294416, 368020, 515228, 644035, 736040, 901649, 1030456, 1288070, 1472080, 1803298, 2060912, 2576140, 3606596, 4508245, 5152280, 7213192, 9016490, 10304560, 14426384, 18032980, 36065960, 72131920]

約数ペア:

[(1, 72131920), (2, 36065960), (4, 18032980), (5, 14426384), (7, 10304560), (8, 9016490), (10, 7213192), (14, 5152280), (16, 4508245), (20, 3606596), (28, 2576140), (35, 2060912), (40, 1803298), (49, 1472080), (56, 1288070), (70, 1030456), (80, 901649), (98, 736040), (112, 644035), (140, 515228), (196, 368020), (245, 294416), (280, 257614), (392, 184010), (490, 147208), (560, 128807), (784, 92005), (980, 73604), (1960, 36802), (3920, 18401)]