28720329

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{16421}}^1$

素因数の和:16488

約数の個数: 16

約数和(自身を含む): 42565824

約数和(自身を除く): 13845495

約数列:

[1, 3, 11, 33, 53, 159, 583, 1749, 16421, 49263, 180631, 541893, 870313, 2610939, 9573443, 28720329]

約数ペア:

[(1, 28720329), (3, 9573443), (11, 2610939), (33, 870313), (53, 541893), (159, 180631), (583, 49263), (1749, 16421)]