21978346

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{283}}^1$

素因数の和:430

約数の個数: 32

約数和(自身を含む): 37215360

約数和(自身を除く): 15237014

約数列:

[1, 2, 13, 26, 29, 58, 103, 206, 283, 377, 566, 754, 1339, 2678, 2987, 3679, 5974, 7358, 8207, 16414, 29149, 38831, 58298, 77662, 106691, 213382, 378937, 757874, 845321, 1690642, 10989173, 21978346]

約数ペア:

[(1, 21978346), (2, 10989173), (13, 1690642), (26, 845321), (29, 757874), (58, 378937), (103, 213382), (206, 106691), (283, 77662), (377, 58298), (566, 38831), (754, 29149), (1339, 16414), (2678, 8207), (2987, 7358), (3679, 5974)]