18972944

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{139}}^1\times {\mathrm{449}}^1$

素因数の和:615

約数の個数: 40

約数和(自身を含む): 39060000

約数和(自身を除く): 20087056

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 139, 152, 278, 304, 449, 556, 898, 1112, 1796, 2224, 2641, 3592, 5282, 7184, 8531, 10564, 17062, 21128, 34124, 42256, 62411, 68248, 124822, 136496, 249644, 499288, 998576, 1185809, 2371618, 4743236, 9486472, 18972944]

約数ペア:

[(1, 18972944), (2, 9486472), (4, 4743236), (8, 2371618), (16, 1185809), (19, 998576), (38, 499288), (76, 249644), (139, 136496), (152, 124822), (278, 68248), (304, 62411), (449, 42256), (556, 34124), (898, 21128), (1112, 17062), (1796, 10564), (2224, 8531), (2641, 7184), (3592, 5282)]