28264257

素因数分解:

$3^2\times 7^1\times {\mathrm{149}}^1\times {\mathrm{3011}}^1$

素因数の和:3173

約数の個数: 24

約数和(自身を含む): 46987200

約数和(自身を除く): 18722943

約数列:

[1, 3, 7, 9, 21, 63, 149, 447, 1043, 1341, 3011, 3129, 9033, 9387, 21077, 27099, 63231, 189693, 448639, 1345917, 3140473, 4037751, 9421419, 28264257]

約数ペア:

[(1, 28264257), (3, 9421419), (7, 4037751), (9, 3140473), (21, 1345917), (63, 448639), (149, 189693), (447, 63231), (1043, 27099), (1341, 21077), (3011, 9387), (3129, 9033)]