20503665

素因数分解:

$3^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{1669}}^1$

素因数の和:1703

約数の個数: 64

約数和(自身を含む): 44889600

約数和(自身を除く): 24385935

約数列:

[1, 3, 5, 7, 9, 13, 15, 21, 27, 35, 39, 45, 63, 65, 91, 105, 117, 135, 189, 195, 273, 315, 351, 455, 585, 819, 945, 1365, 1669, 1755, 2457, 4095, 5007, 8345, 11683, 12285, 15021, 21697, 25035, 35049, 45063, 58415, 65091, 75105, 105147, 108485, 151879, 175245, 195273, 225315, 315441, 325455, 455637, 525735, 585819, 759395, 976365, 1366911, 1577205, 2278185, 2929095, 4100733, 6834555, 20503665]

約数ペア:

[(1, 20503665), (3, 6834555), (5, 4100733), (7, 2929095), (9, 2278185), (13, 1577205), (15, 1366911), (21, 976365), (27, 759395), (35, 585819), (39, 525735), (45, 455637), (63, 325455), (65, 315441), (91, 225315), (105, 195273), (117, 175245), (135, 151879), (189, 108485), (195, 105147), (273, 75105), (315, 65091), (351, 58415), (455, 45063), (585, 35049), (819, 25035), (945, 21697), (1365, 15021), (1669, 12285), (1755, 11683), (2457, 8345), (4095, 5007)]