20580320

素因数分解:

$2^5\times 5^1\times {\mathrm{293}}^1\times {\mathrm{439}}^1$

素因数の和:747

約数の個数: 48

約数和(自身を含む): 48898080

約数和(自身を除く): 28317760

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 293, 439, 586, 878, 1172, 1465, 1756, 2195, 2344, 2930, 3512, 4390, 4688, 5860, 7024, 8780, 9376, 11720, 14048, 17560, 23440, 35120, 46880, 70240, 128627, 257254, 514508, 643135, 1029016, 1286270, 2058032, 2572540, 4116064, 5145080, 10290160, 20580320]

約数ペア:

[(1, 20580320), (2, 10290160), (4, 5145080), (5, 4116064), (8, 2572540), (10, 2058032), (16, 1286270), (20, 1029016), (32, 643135), (40, 514508), (80, 257254), (160, 128627), (293, 70240), (439, 46880), (586, 35120), (878, 23440), (1172, 17560), (1465, 14048), (1756, 11720), (2195, 9376), (2344, 8780), (2930, 7024), (3512, 5860), (4390, 4688)]