20921137055

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^2\times {\mathrm{16369}}^1$

素因数の和:16500

約数の個数: 48

約数和(自身を含む): 31494832320

約数和(自身を除く): 10573695265

約数列:

[1, 5, 7, 13, 35, 53, 65, 91, 265, 371, 455, 689, 1855, 2809, 3445, 4823, 14045, 16369, 19663, 24115, 36517, 81845, 98315, 114583, 182585, 212797, 255619, 572915, 867557, 1063985, 1278095, 1489579, 4337785, 6072899, 7447895, 11278241, 30364495, 45980521, 56391205, 78947687, 229902605, 321863647, 394738435, 597746773, 1609318235, 2988733865, 4184227411, 20921137055]

約数ペア:

[(1, 20921137055), (5, 4184227411), (7, 2988733865), (13, 1609318235), (35, 597746773), (53, 394738435), (65, 321863647), (91, 229902605), (265, 78947687), (371, 56391205), (455, 45980521), (689, 30364495), (1855, 11278241), (2809, 7447895), (3445, 6072899), (4823, 4337785), (14045, 1489579), (16369, 1278095), (19663, 1063985), (24115, 867557), (36517, 572915), (81845, 255619), (98315, 212797), (114583, 182585)]