21499504

素因数分解:

$2^4\times {\mathrm{13}}^2\times {\mathrm{7951}}^1$

素因数の和:7985

約数の個数: 30

約数和(自身を含む): 45111696

約数和(自身を除く): 23612192

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 169, 208, 338, 676, 1352, 2704, 7951, 15902, 31804, 63608, 103363, 127216, 206726, 413452, 826904, 1343719, 1653808, 2687438, 5374876, 10749752, 21499504]

約数ペア:

[(1, 21499504), (2, 10749752), (4, 5374876), (8, 2687438), (13, 1653808), (16, 1343719), (26, 826904), (52, 413452), (104, 206726), (169, 127216), (208, 103363), (338, 63608), (676, 31804), (1352, 15902), (2704, 7951)]