38980420

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1\times {\mathrm{283}}^1$

素因数の和:460

約数の個数: 48

約数和(自身を含む): 84163968

約数和(自身を除く): 45183548

約数列:

[1, 2, 4, 5, 10, 20, 71, 97, 142, 194, 283, 284, 355, 388, 485, 566, 710, 970, 1132, 1415, 1420, 1940, 2830, 5660, 6887, 13774, 20093, 27451, 27548, 34435, 40186, 54902, 68870, 80372, 100465, 109804, 137255, 137740, 200930, 274510, 401860, 549020, 1949021, 3898042, 7796084, 9745105, 19490210, 38980420]

約数ペア:

[(1, 38980420), (2, 19490210), (4, 9745105), (5, 7796084), (10, 3898042), (20, 1949021), (71, 549020), (97, 401860), (142, 274510), (194, 200930), (283, 137740), (284, 137255), (355, 109804), (388, 100465), (485, 80372), (566, 68870), (710, 54902), (970, 40186), (1132, 34435), (1415, 27548), (1420, 27451), (1940, 20093), (2830, 13774), (5660, 6887)]