388971080

素因数分解:

$2^3\times 5^1\times {\mathrm{9724277}}^1$

素因数の和:9724288

約数の個数: 16

約数和(自身を含む): 875185020

約数和(自身を除く): 486213940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 9724277, 19448554, 38897108, 48621385, 77794216, 97242770, 194485540, 388971080]

約数ペア:

[(1, 388971080), (2, 194485540), (4, 97242770), (5, 77794216), (8, 48621385), (10, 38897108), (20, 19448554), (40, 9724277)]