20808970

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{13}}^2\times {\mathrm{1759}}^1$

素因数の和:1799

約数の個数: 48

約数和(自身を含む): 46379520

約数和(自身を除く): 25570550

約数列:

[1, 2, 5, 7, 10, 13, 14, 26, 35, 65, 70, 91, 130, 169, 182, 338, 455, 845, 910, 1183, 1690, 1759, 2366, 3518, 5915, 8795, 11830, 12313, 17590, 22867, 24626, 45734, 61565, 114335, 123130, 160069, 228670, 297271, 320138, 594542, 800345, 1486355, 1600690, 2080897, 2972710, 4161794, 10404485, 20808970]

約数ペア:

[(1, 20808970), (2, 10404485), (5, 4161794), (7, 2972710), (10, 2080897), (13, 1600690), (14, 1486355), (26, 800345), (35, 594542), (65, 320138), (70, 297271), (91, 228670), (130, 160069), (169, 123130), (182, 114335), (338, 61565), (455, 45734), (845, 24626), (910, 22867), (1183, 17590), (1690, 12313), (1759, 11830), (2366, 8795), (3518, 5915)]