204920457

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{211}}^1\times {\mathrm{449}}^1$

素因数の和:773

約数の個数: 32

約数和(自身を含む): 317491200

約数和(自身を除く): 112570743

約数列:

[1, 3, 7, 21, 103, 211, 309, 449, 633, 721, 1347, 1477, 2163, 3143, 4431, 9429, 21733, 46247, 65199, 94739, 138741, 152131, 284217, 323729, 456393, 663173, 971187, 1989519, 9758117, 29274351, 68306819, 204920457]

約数ペア:

[(1, 204920457), (3, 68306819), (7, 29274351), (21, 9758117), (103, 1989519), (211, 971187), (309, 663173), (449, 456393), (633, 323729), (721, 284217), (1347, 152131), (1477, 138741), (2163, 94739), (3143, 65199), (4431, 46247), (9429, 21733)]