389639560

素因数分解:

$2^3\times 5^1\times {\mathrm{9740989}}^1$

素因数の和:9741000

約数の個数: 16

約数和(自身を含む): 876689100

約数和(自身を除く): 487049540

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9740989, 19481978, 38963956, 48704945, 77927912, 97409890, 194819780, 389639560]

約数ペア:

[(1, 389639560), (2, 194819780), (4, 97409890), (5, 77927912), (8, 48704945), (10, 38963956), (20, 19481978), (40, 9740989)]