20689095

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{1913}}^1$

素因数の和:2031

約数の個数: 32

約数和(自身を含む): 38218752

約数和(自身を除く): 17529657

約数列:

[1, 3, 5, 7, 15, 21, 35, 103, 105, 309, 515, 721, 1545, 1913, 2163, 3605, 5739, 9565, 10815, 13391, 28695, 40173, 66955, 197039, 200865, 591117, 985195, 1379273, 2955585, 4137819, 6896365, 20689095]

約数ペア:

[(1, 20689095), (3, 6896365), (5, 4137819), (7, 2955585), (15, 1379273), (21, 985195), (35, 591117), (103, 200865), (105, 197039), (309, 66955), (515, 40173), (721, 28695), (1545, 13391), (1913, 10815), (2163, 9565), (3605, 5739)]