19773145

素因数分解:

$5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:265

約数の個数: 32

約数和(自身を含む): 28131840

約数和(自身を除く): 8358695

約数列:

[1, 5, 7, 35, 71, 73, 109, 355, 365, 497, 511, 545, 763, 2485, 2555, 3815, 5183, 7739, 7957, 25915, 36281, 38695, 39785, 54173, 55699, 181405, 270865, 278495, 564947, 2824735, 3954629, 19773145]

約数ペア:

[(1, 19773145), (5, 3954629), (7, 2824735), (35, 564947), (71, 278495), (73, 270865), (109, 181405), (355, 55699), (365, 54173), (497, 39785), (511, 38695), (545, 36281), (763, 25915), (2485, 7957), (2555, 7739), (3815, 5183)]