20291320

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{72469}}^1$

素因数の和:72487

約数の個数: 32

約数和(自身を含む): 52178400

約数和(自身を除く): 31887080

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 72469, 144938, 289876, 362345, 507283, 579752, 724690, 1014566, 1449380, 2029132, 2536415, 2898760, 4058264, 5072830, 10145660, 20291320]

約数ペア:

[(1, 20291320), (2, 10145660), (4, 5072830), (5, 4058264), (7, 2898760), (8, 2536415), (10, 2029132), (14, 1449380), (20, 1014566), (28, 724690), (35, 579752), (40, 507283), (56, 362345), (70, 289876), (140, 144938), (280, 72469)]