28452880

素因数分解:

$2^4\times 5^1\times {\mathrm{19}}^1\times {\mathrm{18719}}^1$

素因数の和:18751

約数の個数: 40

約数和(自身を含む): 69638400

約数和(自身を除く): 41185520

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 38, 40, 76, 80, 95, 152, 190, 304, 380, 760, 1520, 18719, 37438, 74876, 93595, 149752, 187190, 299504, 355661, 374380, 711322, 748760, 1422644, 1497520, 1778305, 2845288, 3556610, 5690576, 7113220, 14226440, 28452880]

約数ペア:

[(1, 28452880), (2, 14226440), (4, 7113220), (5, 5690576), (8, 3556610), (10, 2845288), (16, 1778305), (19, 1497520), (20, 1422644), (38, 748760), (40, 711322), (76, 374380), (80, 355661), (95, 299504), (152, 187190), (190, 149752), (304, 93595), (380, 74876), (760, 37438), (1520, 18719)]