21955605

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{211}}^1\times {\mathrm{991}}^1$

素因数の和:1217

約数の個数: 32

約数和(自身を含む): 40378368

約数和(自身を除く): 18422763

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 211, 633, 991, 1055, 1477, 2973, 3165, 4431, 4955, 6937, 7385, 14865, 20811, 22155, 34685, 104055, 209101, 627303, 1045505, 1463707, 3136515, 4391121, 7318535, 21955605]

約数ペア:

[(1, 21955605), (3, 7318535), (5, 4391121), (7, 3136515), (15, 1463707), (21, 1045505), (35, 627303), (105, 209101), (211, 104055), (633, 34685), (991, 22155), (1055, 20811), (1477, 14865), (2973, 7385), (3165, 6937), (4431, 4955)]