389675380

素因数分解:

$2^2\times 5^1\times {\mathrm{139}}^1\times {\mathrm{140171}}^1$

素因数の和:140319

約数の個数: 24

約数和(自身を含む): 824211360

約数和(自身を除く): 434535980

約数列:

[1, 2, 4, 5, 10, 20, 139, 278, 556, 695, 1390, 2780, 140171, 280342, 560684, 700855, 1401710, 2803420, 19483769, 38967538, 77935076, 97418845, 194837690, 389675380]

約数ペア:

[(1, 389675380), (2, 194837690), (4, 97418845), (5, 77935076), (10, 38967538), (20, 19483769), (139, 2803420), (278, 1401710), (556, 700855), (695, 560684), (1390, 280342), (2780, 140171)]