28912281

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{13709}}^1$

素因数の和:13768

約数の個数: 16

約数和(自身を含む): 41678400

約数和(自身を除く): 12766119

約数列:

[1, 3, 19, 37, 57, 111, 703, 2109, 13709, 41127, 260471, 507233, 781413, 1521699, 9637427, 28912281]

約数ペア:

[(1, 28912281), (3, 9637427), (19, 1521699), (37, 781413), (57, 507233), (111, 260471), (703, 41127), (2109, 13709)]