38811920

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{9901}}^1$

素因数の和:9928

約数の個数: 60

約数和(自身を含む): 104981004

約数和(自身を除く): 66169084

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, 9901, 19802, 39604, 49505, 69307, 79208, 99010, 138614, 158416, 198020, 277228, 346535, 396040, 485149, 554456, 693070, 792080, 970298, 1108912, 1386140, 1940596, 2425745, 2772280, 3881192, 4851490, 5544560, 7762384, 9702980, 19405960, 38811920]

約数ペア:

[(1, 38811920), (2, 19405960), (4, 9702980), (5, 7762384), (7, 5544560), (8, 4851490), (10, 3881192), (14, 2772280), (16, 2425745), (20, 1940596), (28, 1386140), (35, 1108912), (40, 970298), (49, 792080), (56, 693070), (70, 554456), (80, 485149), (98, 396040), (112, 346535), (140, 277228), (196, 198020), (245, 158416), (280, 138614), (392, 99010), (490, 79208), (560, 69307), (784, 49505), (980, 39604), (1960, 19802), (3920, 9901)]