389614780

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{98887}}^1$

素因数の和:99093

約数の個数: 24

約数和(自身を含む): 822352608

約数和(自身を除く): 432737828

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 98887, 197774, 395548, 494435, 988870, 1977740, 19480739, 38961478, 77922956, 97403695, 194807390, 389614780]

約数ペア:

[(1, 389614780), (2, 194807390), (4, 97403695), (5, 77922956), (10, 38961478), (20, 19480739), (197, 1977740), (394, 988870), (788, 494435), (985, 395548), (1970, 197774), (3940, 98887)]