21481053

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{73}}^1\times {\mathrm{241}}^1$

素因数の和:365

約数の個数: 32

約数和(自身を含む): 32664192

約数和(自身を除く): 11183139

約数列:

[1, 3, 11, 33, 37, 73, 111, 219, 241, 407, 723, 803, 1221, 2409, 2651, 2701, 7953, 8103, 8917, 17593, 26751, 29711, 52779, 89133, 98087, 193523, 294261, 580569, 650941, 1952823, 7160351, 21481053]

約数ペア:

[(1, 21481053), (3, 7160351), (11, 1952823), (33, 650941), (37, 580569), (73, 294261), (111, 193523), (219, 98087), (241, 89133), (407, 52779), (723, 29711), (803, 26751), (1221, 17593), (2409, 8917), (2651, 8103), (2701, 7953)]