28247289

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{233}}^1\times {\mathrm{251}}^1$

素因数の和:517

約数の個数: 32

約数和(自身を含む): 45287424

約数和(自身を除く): 17040135

約数列:

[1, 3, 7, 21, 23, 69, 161, 233, 251, 483, 699, 753, 1631, 1757, 4893, 5271, 5359, 5773, 16077, 17319, 37513, 40411, 58483, 112539, 121233, 175449, 409381, 1228143, 1345109, 4035327, 9415763, 28247289]

約数ペア:

[(1, 28247289), (3, 9415763), (7, 4035327), (21, 1345109), (23, 1228143), (69, 409381), (161, 175449), (233, 121233), (251, 112539), (483, 58483), (699, 40411), (753, 37513), (1631, 17319), (1757, 16077), (4893, 5773), (5271, 5359)]