28259427

素因数分解:

$3^1\times 7^3\times {\mathrm{29}}^1\times {\mathrm{947}}^1$

素因数の和:1000

約数の個数: 32

約数和(自身を含む): 45504000

約数和(自身を除く): 17244573

約数列:

[1, 3, 7, 21, 29, 49, 87, 147, 203, 343, 609, 947, 1029, 1421, 2841, 4263, 6629, 9947, 19887, 27463, 29841, 46403, 82389, 139209, 192241, 324821, 576723, 974463, 1345687, 4037061, 9419809, 28259427]

約数ペア:

[(1, 28259427), (3, 9419809), (7, 4037061), (21, 1345687), (29, 974463), (49, 576723), (87, 324821), (147, 192241), (203, 139209), (343, 82389), (609, 46403), (947, 29841), (1029, 27463), (1421, 19887), (2841, 9947), (4263, 6629)]