28389927

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{53}}^1\times {\mathrm{131}}^1$

素因数の和:263

約数の個数: 32

約数和(自身を含む): 41057280

約数和(自身を除く): 12667353

約数列:

[1, 3, 29, 47, 53, 87, 131, 141, 159, 393, 1363, 1537, 2491, 3799, 4089, 4611, 6157, 6943, 7473, 11397, 18471, 20829, 72239, 178553, 201347, 216717, 326321, 535659, 604041, 978963, 9463309, 28389927]

約数ペア:

[(1, 28389927), (3, 9463309), (29, 978963), (47, 604041), (53, 535659), (87, 326321), (131, 216717), (141, 201347), (159, 178553), (393, 72239), (1363, 20829), (1537, 18471), (2491, 11397), (3799, 7473), (4089, 6943), (4611, 6157)]