20443185

素因数分解:

$3^4\times 5^1\times 7^1\times {\mathrm{7211}}^1$

素因数の和:7235

約数の個数: 40

約数和(自身を含む): 41887296

約数和(自身を除く): 21444111

約数列:

[1, 3, 5, 7, 9, 15, 21, 27, 35, 45, 63, 81, 105, 135, 189, 315, 405, 567, 945, 2835, 7211, 21633, 36055, 50477, 64899, 108165, 151431, 194697, 252385, 324495, 454293, 584091, 757155, 973485, 1362879, 2271465, 2920455, 4088637, 6814395, 20443185]

約数ペア:

[(1, 20443185), (3, 6814395), (5, 4088637), (7, 2920455), (9, 2271465), (15, 1362879), (21, 973485), (27, 757155), (35, 584091), (45, 454293), (63, 324495), (81, 252385), (105, 194697), (135, 151431), (189, 108165), (315, 64899), (405, 50477), (567, 36055), (945, 21633), (2835, 7211)]