28068255

素因数分解:

$3^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{809}}^1$

素因数の和:1080

約数の個数: 32

約数和(自身を含む): 50155200

約数和(自身を除く): 22086945

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 257, 771, 809, 1285, 2313, 2427, 3855, 4045, 6939, 7281, 11565, 12135, 21843, 34695, 36405, 109215, 207913, 623739, 1039565, 1871217, 3118695, 5613651, 9356085, 28068255]

約数ペア:

[(1, 28068255), (3, 9356085), (5, 5613651), (9, 3118695), (15, 1871217), (27, 1039565), (45, 623739), (135, 207913), (257, 109215), (771, 36405), (809, 34695), (1285, 21843), (2313, 12135), (2427, 11565), (3855, 7281), (4045, 6939)]