20545120

素因数分解:

$2^5\times 5^1\times {\mathrm{73}}^1\times {\mathrm{1759}}^1$

素因数の和:1847

約数の個数: 48

約数和(自身を含む): 49230720

約数和(自身を除く): 28685600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 73, 80, 146, 160, 292, 365, 584, 730, 1168, 1460, 1759, 2336, 2920, 3518, 5840, 7036, 8795, 11680, 14072, 17590, 28144, 35180, 56288, 70360, 128407, 140720, 256814, 281440, 513628, 642035, 1027256, 1284070, 2054512, 2568140, 4109024, 5136280, 10272560, 20545120]

約数ペア:

[(1, 20545120), (2, 10272560), (4, 5136280), (5, 4109024), (8, 2568140), (10, 2054512), (16, 1284070), (20, 1027256), (32, 642035), (40, 513628), (73, 281440), (80, 256814), (146, 140720), (160, 128407), (292, 70360), (365, 56288), (584, 35180), (730, 28144), (1168, 17590), (1460, 14072), (1759, 11680), (2336, 8795), (2920, 7036), (3518, 5840)]