400996900

素因数分解:

$2^2\times 5^2\times {\mathrm{19}}^1\times {\mathrm{211051}}^1$

素因数の和:211084

約数の個数: 36

約数和(自身を含む): 915965680

約数和(自身を除く): 514968780

約数列:

[1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 380, 475, 950, 1900, 211051, 422102, 844204, 1055255, 2110510, 4009969, 4221020, 5276275, 8019938, 10552550, 16039876, 20049845, 21105100, 40099690, 80199380, 100249225, 200498450, 400996900]

約数ペア:

[(1, 400996900), (2, 200498450), (4, 100249225), (5, 80199380), (10, 40099690), (19, 21105100), (20, 20049845), (25, 16039876), (38, 10552550), (50, 8019938), (76, 5276275), (95, 4221020), (100, 4009969), (190, 2110510), (380, 1055255), (475, 844204), (950, 422102), (1900, 211051)]