21332571

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{127}}^1$

素因数の和:275

約数の個数: 32

約数和(自身を含む): 31825920

約数和(自身を除く): 10493349

約数列:

[1, 3, 13, 39, 59, 73, 127, 177, 219, 381, 767, 949, 1651, 2301, 2847, 4307, 4953, 7493, 9271, 12921, 22479, 27813, 55991, 97409, 120523, 167973, 292227, 361569, 546989, 1640967, 7110857, 21332571]

約数ペア:

[(1, 21332571), (3, 7110857), (13, 1640967), (39, 546989), (59, 361569), (73, 292227), (127, 167973), (177, 120523), (219, 97409), (381, 55991), (767, 27813), (949, 22479), (1651, 12921), (2301, 9271), (2847, 7493), (4307, 4953)]