39891320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{142469}}^1$

素因数の和:142487

約数の個数: 32

約数和(自身を含む): 102578400

約数和(自身を除く): 62687080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 142469, 284938, 569876, 712345, 997283, 1139752, 1424690, 1994566, 2849380, 3989132, 4986415, 5698760, 7978264, 9972830, 19945660, 39891320]

約数ペア:

[(1, 39891320), (2, 19945660), (4, 9972830), (5, 7978264), (7, 5698760), (8, 4986415), (10, 3989132), (14, 2849380), (20, 1994566), (28, 1424690), (35, 1139752), (40, 997283), (56, 712345), (70, 569876), (140, 284938), (280, 142469)]