19925920

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{17791}}^1$

素因数の和:17813

約数の個数: 48

約数和(自身を含む): 53803008

約数和(自身を除く): 33877088

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 32, 35, 40, 56, 70, 80, 112, 140, 160, 224, 280, 560, 1120, 17791, 35582, 71164, 88955, 124537, 142328, 177910, 249074, 284656, 355820, 498148, 569312, 622685, 711640, 996296, 1245370, 1423280, 1992592, 2490740, 2846560, 3985184, 4981480, 9962960, 19925920]

約数ペア:

[(1, 19925920), (2, 9962960), (4, 4981480), (5, 3985184), (7, 2846560), (8, 2490740), (10, 1992592), (14, 1423280), (16, 1245370), (20, 996296), (28, 711640), (32, 622685), (35, 569312), (40, 498148), (56, 355820), (70, 284656), (80, 249074), (112, 177910), (140, 142328), (160, 124537), (224, 88955), (280, 71164), (560, 35582), (1120, 17791)]