20384720

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{13411}}^1$

素因数の和:13443

約数の個数: 40

約数和(自身を含む): 49892640

約数和(自身を除く): 29507920

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 13411, 26822, 53644, 67055, 107288, 134110, 214576, 254809, 268220, 509618, 536440, 1019236, 1072880, 1274045, 2038472, 2548090, 4076944, 5096180, 10192360, 20384720]

約数ペア:

[(1, 20384720), (2, 10192360), (4, 5096180), (5, 4076944), (8, 2548090), (10, 2038472), (16, 1274045), (19, 1072880), (20, 1019236), (38, 536440), (40, 509618), (76, 268220), (80, 254809), (95, 214576), (152, 134110), (190, 107288), (304, 67055), (380, 53644), (760, 26822), (1520, 13411)]