387639820

素因数分解:

$2^2\times 5^1\times {\mathrm{4289}}^1\times {\mathrm{4519}}^1$

素因数の和:8817

約数の個数: 24

約数和(自身を含む): 814413600

約数和(自身を除く): 426773780

約数列:

[1, 2, 4, 5, 10, 20, 4289, 4519, 8578, 9038, 17156, 18076, 21445, 22595, 42890, 45190, 85780, 90380, 19381991, 38763982, 77527964, 96909955, 193819910, 387639820]

約数ペア:

[(1, 387639820), (2, 193819910), (4, 96909955), (5, 77527964), (10, 38763982), (20, 19381991), (4289, 90380), (4519, 85780), (8578, 45190), (9038, 42890), (17156, 22595), (18076, 21445)]