81540400

素因数分解:

$2^4\times 5^2\times {\mathrm{19}}^1\times {\mathrm{10729}}^1$

素因数の和:10766

約数の個数: 60

約数和(自身を含む): 206230600

約数和(自身を除く): 124690200

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 152, 190, 200, 304, 380, 400, 475, 760, 950, 1520, 1900, 3800, 7600, 10729, 21458, 42916, 53645, 85832, 107290, 171664, 203851, 214580, 268225, 407702, 429160, 536450, 815404, 858320, 1019255, 1072900, 1630808, 2038510, 2145800, 3261616, 4077020, 4291600, 5096275, 8154040, 10192550, 16308080, 20385100, 40770200, 81540400]

約数ペア:

[(1, 81540400), (2, 40770200), (4, 20385100), (5, 16308080), (8, 10192550), (10, 8154040), (16, 5096275), (19, 4291600), (20, 4077020), (25, 3261616), (38, 2145800), (40, 2038510), (50, 1630808), (76, 1072900), (80, 1019255), (95, 858320), (100, 815404), (152, 536450), (190, 429160), (200, 407702), (304, 268225), (380, 214580), (400, 203851), (475, 171664), (760, 107290), (950, 85832), (1520, 53645), (1900, 42916), (3800, 21458), (7600, 10729)]