397988212

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{107}}^1\times {\mathrm{109}}^1\times {\mathrm{449}}^1$

素因数の和:688

約数の個数: 48

約数和(自身を含む): 748440000

約数和(自身を除く): 350451788

約数列:

[1, 2, 4, 19, 38, 76, 107, 109, 214, 218, 428, 436, 449, 898, 1796, 2033, 2071, 4066, 4142, 8132, 8284, 8531, 11663, 17062, 23326, 34124, 46652, 48043, 48941, 96086, 97882, 192172, 195764, 221597, 443194, 886388, 912817, 929879, 1825634, 1859758, 3651268, 3719516, 5236687, 10473374, 20946748, 99497053, 198994106, 397988212]

約数ペア:

[(1, 397988212), (2, 198994106), (4, 99497053), (19, 20946748), (38, 10473374), (76, 5236687), (107, 3719516), (109, 3651268), (214, 1859758), (218, 1825634), (428, 929879), (436, 912817), (449, 886388), (898, 443194), (1796, 221597), (2033, 195764), (2071, 192172), (4066, 97882), (4142, 96086), (8132, 48941), (8284, 48043), (8531, 46652), (11663, 34124), (17062, 23326)]