15573921

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{17}}^2\times {\mathrm{23}}^1\times {\mathrm{71}}^1$

素因数の和:142

約数の個数: 48

約数和(自身を含む): 25463808

約数和(自身を除く): 9889887

約数列:

[1, 3, 11, 17, 23, 33, 51, 69, 71, 187, 213, 253, 289, 391, 561, 759, 781, 867, 1173, 1207, 1633, 2343, 3179, 3621, 4301, 4899, 6647, 9537, 12903, 13277, 17963, 19941, 20519, 27761, 39831, 53889, 61557, 73117, 83283, 219351, 225709, 305371, 471937, 677127, 916113, 1415811, 5191307, 15573921]

約数ペア:

[(1, 15573921), (3, 5191307), (11, 1415811), (17, 916113), (23, 677127), (33, 471937), (51, 305371), (69, 225709), (71, 219351), (187, 83283), (213, 73117), (253, 61557), (289, 53889), (391, 39831), (561, 27761), (759, 20519), (781, 19941), (867, 17963), (1173, 13277), (1207, 12903), (1633, 9537), (2343, 6647), (3179, 4899), (3621, 4301)]