20422640

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{36469}}^1$

素因数の和:36489

約数の個数: 40

約数和(自身を含む): 54267360

約数和(自身を除く): 33844720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 36469, 72938, 145876, 182345, 255283, 291752, 364690, 510566, 583504, 729380, 1021132, 1276415, 1458760, 2042264, 2552830, 2917520, 4084528, 5105660, 10211320, 20422640]

約数ペア:

[(1, 20422640), (2, 10211320), (4, 5105660), (5, 4084528), (7, 2917520), (8, 2552830), (10, 2042264), (14, 1458760), (16, 1276415), (20, 1021132), (28, 729380), (35, 583504), (40, 510566), (56, 364690), (70, 291752), (80, 255283), (112, 182345), (140, 145876), (280, 72938), (560, 36469)]