3894520

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{1987}}^1$

素因数の和:2012

約数の個数: 48

約数和(自身を含む): 10198440

約数和(自身を除く): 6303920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 1987, 3974, 7948, 9935, 13909, 15896, 19870, 27818, 39740, 55636, 69545, 79480, 97363, 111272, 139090, 194726, 278180, 389452, 486815, 556360, 778904, 973630, 1947260, 3894520]

約数ペア:

[(1, 3894520), (2, 1947260), (4, 973630), (5, 778904), (7, 556360), (8, 486815), (10, 389452), (14, 278180), (20, 194726), (28, 139090), (35, 111272), (40, 97363), (49, 79480), (56, 69545), (70, 55636), (98, 39740), (140, 27818), (196, 19870), (245, 15896), (280, 13909), (392, 9935), (490, 7948), (980, 3974), (1960, 1987)]